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[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Give 'dd if=/dev/zero of=test.img bs=1M count=1024' a boosted CPU priority of -5." }, { "role": "assistant", "content": "sudo nice -n -5 dd if=/dev/zero of=test.img bs=1M count=1024" } ]
single
nice
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Show the kernel routing table numerically." }, { "role": "assistant", "content": "netstat -rn" } ]
single
netstat
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Please show its size, owner and permissions in notes.py." }, { "role": "assistant", "content": "stat notes.py" } ]
single
stat
[ { "role": "system", "content": "You translate natural-language requests into correct Bash commands." }, { "role": "user", "content": "Check if invoice.py exists and cat it, otherwise say it's missing." }, { "role": "assistant", "content": "[ -f invoice.py ] && cat invoice.py || echo ...
pipeline
chain
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Recursively make everything in data readable and writable by the owner only." }, { "role": "assistant", "content": "chmod -R 600 data" } ]
single
chmod
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "List logged-in users without the header line." }, { "role": "assistant", "content": "w -h" } ]
single
w
[ { "role": "system", "content": "You are a command-line assistant specializing in Bash and GNU coreutils." }, { "role": "user", "content": "Show kernel notice-level messages." }, { "role": "assistant", "content": "dmesg -l notice" } ]
single
dmesg
[ { "role": "system", "content": "You are a command-line assistant specializing in Bash and GNU coreutils." }, { "role": "user", "content": "Read the hostname straight from its config file." }, { "role": "assistant", "content": "cat /etc/hostname" } ]
single
hostname
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Read manifest.ini, then count the lines — as a pipeline." }, { "role": "assistant", "content": "cat manifest.ini | wc -l" } ]
pipeline
wc
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Make a timestamped log directory under logs/." }, { "role": "assistant", "content": "mkdir -p logs/$(date +%Y-%m-%d)" } ]
pipeline
cmdsub
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Start 'dd if=/dev/zero of=test.img bs=1M count=1024' with nice value 10 so it doesn't hog the CPU." }, { "role": "assistant", "content": "nice -...
single
nice
[ { "role": "system", "content": "You are a command-line assistant specializing in Bash and GNU coreutils." }, { "role": "user", "content": "Display w with numeric IPs." }, { "role": "assistant", "content": "w -i" } ]
single
w
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Given index.log, count each unique line, most common first." }, { "role": "assistant", "content": "cat index.log | sort | uniq -c | sort -nr" ...
pipeline
uniq
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "List all open TCP connections." }, { "role": "assistant", "content": "lsof -i tcp" } ]
single
lsof
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Give './import.sh' a boosted CPU priority of -5." }, { "role": "assistant", "content": "sudo nice -n -5 ./import.sh" } ]
single
nice
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "How do I count how many cron processes are running?" }, { "role": "assistant", "content": "pgrep -c cron" } ]
pipeline
pgrep
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "What is tomcat running right now?" }, { "role": "assistant", "content": "w tomcat" } ]
single
w
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Show the process tree including command-line arguments." }, { "role": "assistant", "content": "pstree -a" } ]
single
pstree
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Show established TCP connections numerically." }, { "role": "assistant", "content": "netstat -tn" } ]
single
netstat
[ { "role": "system", "content": "You translate natural-language requests into correct Bash commands." }, { "role": "user", "content": "Bump process 6994 to a higher priority (nice -5). Requires root." }, { "role": "assistant", "content": "sudo renice -n -5 -p 6994" } ]
single
renice
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Print ec2-user's process hierarchy including PIDs." }, { "role": "assistant", "content": "pstree -p ec2-user" } ]
single
pstree
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Set changelog.sql to permissions 644." }, { "role": "assistant", "content": "chmod 644 changelog.sql" } ]
single
chmod
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "I need getopts handling for three options: -i, -d and -t; print usage on bad input." }, { "role": "assistant", "content": "#!/usr/bin/env bash\nset -euo pipefail\ni...
script
getopts
[ { "role": "system", "content": "You translate natural-language requests into correct Bash commands." }, { "role": "user", "content": "Print current vmstat counters once." }, { "role": "assistant", "content": "vmstat" } ]
single
vmstat
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Display kernel messages from the journal with priority error or worse." }, { "role": "assistant", "content": "journalctl -k -p err" } ]
single
journalctl
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Download https://db01.example.com/file.zip and save it with its remote name." }, { "role": "assistant", "content": "curl -O https://db01.example...
single
curl
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Bump process 6456 to a higher priority (nice -5). Requires root." }, { "role": "assistant", "content": "sudo renice -n -5 -p 6456" } ]
single
renice
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Lower the priority of process 1145 to nice value 10." }, { "role": "assistant", "content": "renice -n 10 -p 1145" } ]
single
renice
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Show TCP connections to api.internal." }, { "role": "assistant", "content": "ss -tn dst api.internal" } ]
single
ss
[ { "role": "system", "content": "You are a command-line assistant specializing in Bash and GNU coreutils." }, { "role": "user", "content": "Log vmstat output to a file with timestamps every 5 seconds." }, { "role": "assistant", "content": "vmstat 5 | while read line; do echo \"$(date ...
pipeline
vmstat
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Create a script that dumps every MySQL database into its own gzip file under /mnt/backup, keeping 14 days." }, { "role": "assistant", "content": "#!/usr/bin/env bash\nset -euo pipefail\ndest=/mnt...
script
mysqldump
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Launch 'dd if=/dev/zero of=test.img bs=1M count=1024' at reduced priority (1)." }, { "role": "assistant", "content": "nice -n 1 dd if=/dev/zero of=test.img bs=1M co...
single
nice
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Show vmstat memory counters in megabytes." }, { "role": "assistant", "content": "vmstat -s -S M" } ]
single
vmstat
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Report disk I/O counters via vmstat -d." }, { "role": "assistant", "content": "vmstat -d" } ]
single
vmstat
[ { "role": "system", "content": "You translate natural-language requests into correct Bash commands." }, { "role": "user", "content": "Show memory usage with a total line for RAM plus swap." }, { "role": "assistant", "content": "free -h -t" } ]
single
free
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "monitor system performance with vmstat every 5 seconds using human-readable units" }, { "role": "assistant", "content": "vmstat -S M 5" } ]
single
vmstat
[ { "role": "system", "content": "You are a command-line assistant specializing in Bash and GNU coreutils." }, { "role": "user", "content": "List all files opened by cron." }, { "role": "assistant", "content": "lsof -c cron" } ]
single
lsof
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Show the process tree sorted numerically by PID." }, { "role": "assistant", "content": "pstree -n" } ]
single
pstree
[ { "role": "system", "content": "You translate natural-language requests into correct Bash commands." }, { "role": "user", "content": "When was the system booted, per who -b?" }, { "role": "assistant", "content": "who -b" } ]
single
uptime
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Write a countdown script from 10 to 1 that prints each number one second apart." }, { "role": "assistant", "content": "#!/usr/bin/env bash\nset -euo pipefail\ni=10\...
script
while
[ { "role": "system", "content": "You translate natural-language requests into correct Bash commands." }, { "role": "user", "content": "Show a short w listing without the login/JCPU/PCPU columns." }, { "role": "assistant", "content": "w -s" } ]
single
w
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Show logged-in users with their IP addresses instead of hostnames." }, { "role": "assistant", "content": "w -i" } ]
single
w
[ { "role": "system", "content": "You translate natural-language requests into correct Bash commands." }, { "role": "user", "content": "Show detailed per-device iostat, 3s apart, 10 times." }, { "role": "assistant", "content": "iostat -x 3 10" } ]
single
iostat
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Watch the kernel log live." }, { "role": "assistant", "content": "dmesg -w" } ]
single
dmesg
[ { "role": "system", "content": "You translate natural-language requests into correct Bash commands." }, { "role": "user", "content": "Print just the short hostname." }, { "role": "assistant", "content": "hostname -s" } ]
single
hostname
[ { "role": "system", "content": "You are a command-line assistant specializing in Bash and GNU coreutils." }, { "role": "user", "content": "For event.sql, show the last 20 lines." }, { "role": "assistant", "content": "tail -n 20 event.sql" } ]
single
tail
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "strip leading whitespace from every line of config.json and save to clean.txt" }, { "role": "assistant", "content": "sed 's/^[[:space:]]*//' config.json > clean.txt...
pipeline
sed
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Show all TCP sockets numerically." }, { "role": "assistant", "content": "ss -tan" } ]
single
ss
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Fetch JSON from https://registry.example.org/api/users and pretty-print it with jq." }, { "role": "assistant", "content": "curl -s https://regis...
pipeline
curl
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Get the bare PID that holds port 443." }, { "role": "assistant", "content": "lsof -i :443 -t" } ]
single
lsof
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "strip leading whitespace from every line of settings.ini and save to clean.txt" }, { "role": "assistant", "content": "sed 's/^[[:space:]]*//' settings.ini > clean.t...
pipeline
sed
[ { "role": "system", "content": "You translate natural-language requests into correct Bash commands." }, { "role": "user", "content": "Print how many CPU cores this machine has." }, { "role": "assistant", "content": "echo \"Cores: $(nproc)\"" } ]
pipeline
cmdsub
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "On this box, show which processes are listening and on which ports." }, { "role": "assistant", "content": "ss -tlnp | awk 'NR>1 {print $4, $6}'" } ]
pipeline
ss
[ { "role": "system", "content": "You translate natural-language requests into correct Bash commands." }, { "role": "user", "content": "Extract the idle-CPU column from a vmstat snapshot." }, { "role": "assistant", "content": "vmstat 1 2 | tail -n1 | awk '{print $15}'" } ]
pipeline
vmstat
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Launch 'make -j4' at reduced priority (5)." }, { "role": "assistant", "content": "nice -n 5 make -j4" } ]
single
nice
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Show a summary of socket counts." }, { "role": "assistant", "content": "ss -s" } ]
single
ss
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Find files in include larger than +100M." }, { "role": "assistant", "content": "find include -type f -size +100M" } ]
single
find
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Write a Bash script that alerts if the root filesystem is more than 85% full." }, { "role": "assistant", "content": "#!/usr/bin/env bash\nset -euo pipefail\nthresho...
script
if
[ { "role": "system", "content": "You translate natural-language requests into correct Bash commands." }, { "role": "user", "content": "How many active sessions are there per w?" }, { "role": "assistant", "content": "w | wc -l" } ]
single
w
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Show TCP sockets in the TIME-WAIT state with their process." }, { "role": "assistant", "content": "ss -tp state time-wait" } ]
single
ss
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Show kernel ring buffer messages with human-readable timestamps." }, { "role": "assistant", "content": "dmesg -T" } ]
single
dmesg
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Show listening TCP/UDP sockets and their PIDs." }, { "role": "assistant", "content": "netstat -tulpn" } ]
single
netstat
[ { "role": "system", "content": "You are a command-line assistant specializing in Bash and GNU coreutils." }, { "role": "user", "content": "List connections stuck in TIME-WAIT." }, { "role": "assistant", "content": "ss -tp state time-wait" } ]
single
ss
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "How long has the system been running?" }, { "role": "assistant", "content": "uptime" } ]
single
uptime
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Add a timestamp column to vmstat, 3s interval, 10 rounds." }, { "role": "assistant", "content": "vmstat -t 3 10" } ]
single
vmstat
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Check what holds port 5672 with ss." }, { "role": "assistant", "content": "ss -tlnp sport = :5672" } ]
single
ss
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Count how many established TCP connections there are." }, { "role": "assistant", "content": "ss -t state established | tail -n +2 | wc -l" } ]
pipeline
ss
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Print just the PID using port 8000." }, { "role": "assistant", "content": "lsof -i :8000 -t" } ]
single
lsof
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Show the kernel routing table." }, { "role": "assistant", "content": "netstat -rn" } ]
single
netstat
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "List the unique 'critical' messages in messages." }, { "role": "assistant", "content": "grep 'critical' messages | sort -u" } ]
pipeline
grep
[ { "role": "system", "content": "You are a command-line assistant specializing in Bash and GNU coreutils." }, { "role": "user", "content": "Show the process tree with PIDs, highlighting the current process." }, { "role": "assistant", "content": "pstree -hp" } ]
single
pstree
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Check if results.html exists and cat it, otherwise say it's missing." }, { "role": "assistant", "content": "[ -f results.html ] && cat results.html || echo 'not found'" } ]
pipeline
chain
[ { "role": "system", "content": "You are a command-line assistant specializing in Bash and GNU coreutils." }, { "role": "user", "content": "List all files opened by redis-server." }, { "role": "assistant", "content": "lsof -c redis-server" } ]
single
lsof
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Show only the load averages." }, { "role": "assistant", "content": "uptime | awk -F'load average:' '{print $2}'" } ]
single
uptime
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Download https://8.8.8.8/file.zip and save it with its remote name." }, { "role": "assistant", "content": "curl -O https://8.8.8.8/file.zip" } ]
single
curl
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "List all listening TCP and UDP sockets with programs." }, { "role": "assistant", "content": "ss -tulnp" } ]
single
ss
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Timestamped vmstat every 3s for 5 samples." }, { "role": "assistant", "content": "vmstat -t 3 5" } ]
single
vmstat
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "List active TCP sessions with numeric addresses." }, { "role": "assistant", "content": "netstat -tn" } ]
single
netstat
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Print just the PID using port 80." }, { "role": "assistant", "content": "lsof -i :80 -t" } ]
single
lsof
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Show a one-shot CPU and disk I/O summary." }, { "role": "assistant", "content": "iostat" } ]
single
iostat
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Print git's process hierarchy including PIDs." }, { "role": "assistant", "content": "pstree -p git" } ]
single
pstree
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Display the process hierarchy for user deploy." }, { "role": "assistant", "content": "pstree deploy" } ]
single
pstree
[ { "role": "system", "content": "You translate natural-language requests into correct Bash commands." }, { "role": "user", "content": "Give 'find / -name '*.core'' a boosted CPU priority of -5." }, { "role": "assistant", "content": "sudo nice -n -5 find / -name '*.core'" } ]
single
nice
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Show TCP connections to db01.example.org." }, { "role": "assistant", "content": "ss -tn dst db01.example.org" } ]
single
ss
[ { "role": "system", "content": "You translate natural-language requests into correct Bash commands." }, { "role": "user", "content": "Launch 'ffmpeg -i in.mp4 out.mp4' at reduced priority (15)." }, { "role": "assistant", "content": "nice -n 15 ffmpeg -i in.mp4 out.mp4" } ]
single
nice
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Show the 50 most recent grafana-server log lines, newest last." }, { "role": "assistant", "content": "journalctl -u grafana-server -n 50" } ]
single
journalctl
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Print the used percentage of the root filesystem as a number." }, { "role": "assistant", "content": "df -h / | awk 'NR==2 {print $5}'" } ]
pipeline
df
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "download https://db01.example.com/list.txt and count the lines" }, { "role": "assistant", "content": "curl -s https://db01.example.com/list.txt ...
pipeline
curl
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "list only the .gif files in lib" }, { "role": "assistant", "content": "ls lib | grep '\\.gif$'" } ]
pipeline
ls
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Include a combined RAM+swap total in the free output." }, { "role": "assistant", "content": "free -h -t" } ]
single
free
[ { "role": "system", "content": "You are a command-line assistant specializing in Bash and GNU coreutils." }, { "role": "user", "content": "List active (established) sessions on port 53." }, { "role": "assistant", "content": "lsof -i :53 -sTCP:ESTABLISHED" } ]
single
lsof
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Show detailed per-device iostat, 2s apart, 3 times." }, { "role": "assistant", "content": "iostat -x 2 3" } ]
single
iostat
[ { "role": "system", "content": "You are a helpful assistant that writes correct, idiomatic Bash commands." }, { "role": "user", "content": "Tally how many times each log level appears in audit.log." }, { "role": "assistant", "content": "grep -oE '(INFO|WARN|ERROR|DEBUG)' audit.log | ...
pipeline
grep
[ { "role": "system", "content": "You translate natural-language requests into correct Bash commands." }, { "role": "user", "content": "Show the process tree for user dave." }, { "role": "assistant", "content": "pstree dave" } ]
single
pstree
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Sum the response sizes (column 10) in metrics.log." }, { "role": "assistant", "content": "awk '{s+=$10} END{print s}' metrics.log" } ]
pipeline
awk
[ { "role": "system", "content": "You are a Linux shell expert. Respond with Bash only." }, { "role": "user", "content": "Run 'rsync -a /data /mnt/backup' at a lower priority (nice 19)." }, { "role": "assistant", "content": "nice -n 19 rsync -a /data /mnt/backup" } ]
single
nice
[ { "role": "system", "content": "You are a Bash expert." }, { "role": "user", "content": "Show memory usage using powers of 1000 (SI units)." }, { "role": "assistant", "content": "free -h --si" } ]
single
free
[ { "role": "system", "content": "You translate natural-language requests into correct Bash commands." }, { "role": "user", "content": "Show the systemd journal for the apache2 service." }, { "role": "assistant", "content": "journalctl -u apache2" } ]
single
journalctl
[ { "role": "system", "content": "You are a command-line assistant specializing in Bash and GNU coreutils." }, { "role": "user", "content": "Show every network socket in use." }, { "role": "assistant", "content": "lsof -i" } ]
single
lsof
[ { "role": "system", "content": "You translate natural-language requests into correct Bash commands." }, { "role": "user", "content": "Show just the amount of free memory in MB." }, { "role": "assistant", "content": "free -m | awk '/Mem/ {print $4}'" } ]
pipeline
free
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Bash Instruct I — 55,000 verified natural-language → Bash pairs

⚠️ Superseded by Bash Instruct III

III doubles the utility vocabulary (89 → 182), adds grouped equivalent answers, real human phrasing from tldr-pages, validation by execution on real Linux, and a style pass that removes shell antipatterns. New work should use III.

This version remains useful for one specific purpose: it overlaps III by only ~29%, so it is the one generation that can be deduplicated in as extra volume. See Combining versions.

Bash Instruct I is the first-generation synthetic instruction-tuning dataset in this family, pairing natural-language requests with correct Bash: single commands, short pipelines, and multi-line scripts. It is built for supervised fine-tuning of small LLMs that must turn a plain request into shell code that actually runs.

Every row is a three-turn chat conversation (system / user / assistant) plus two metadata fields (category, utility) for slicing and analysis.

🤗 Dataset viewer https://huggingface.co/datasets/Frost2o24/bash-instruct-55k
🐙 Source, generator & validator https://github.com/ya5h-P/bash-instruct-55k
📦 Later generations III (recommended) · II
⚖️ License MIT
from datasets import load_dataset

ds = load_dataset("Frost2o24/bash-instruct-55k", split="train")

Version comparison

I (this) II III
Rows 55,000 54,803 54,360
Distinct primary utilities 89 182 182
variant_group (grouped equivalent answers)
Real phrasing seeded from tldr-pages
Validated by execution on real Linux
ShellCheck-clean rate (warning level) 97.9% 98.5% 99.8%
Antipattern style pass (SC2002, SC2010)

This version is validated statically onlybash -n, ShellCheck, and the argument-fidelity gate. It was never executed at scale on real Linux, and it has a narrower utility vocabulary. Prefer III.


At a glance

All figures below are recomputed directly from the shipped bash_dataset.jsonl, not carried over from an earlier run.

Metric Value
Rows 55,000
single / pipeline / script 40% / 35% / 25% (exact)
Distinct primary utilities 89
bash -n syntax-valid 100% (0 / 55,000 failures)
ShellCheck-clean at warning level 97.9% of a 6,000-row random sample
Exact-duplicate (request, command) pairs 0
Unique request text 98.7%
Unique command text 75.6%
Argument fidelity 100% (0 request/command noun mismatches)
Max share of any single utility 4.0% (hard cap of 2,200 rows per utility)
Most common 4-word request opening 1.4% of rows
Mean command length 85 chars · 13.8 tokens

Note the trade-off against later versions: request text here is more unique (98.7% vs ~80% of rows) because there are no grouped answer variants, but command text is less unique (75.6% vs 78.7%) because the same command recurs under different phrasings.


Quickstart

Load

from datasets import load_dataset

ds = load_dataset("Frost2o24/bash-instruct-55k", split="train")
print(ds)
# Dataset({features: ['messages', 'category', 'utility'], num_rows: 55000})

print(ds[0]["messages"])

Fine-tune (TRL SFTTrainer)

The messages column is already in the OpenAI-style chat format that TRL, Axolotl, Unsloth, and LLaMA-Factory consume directly — no preprocessing or column mapping needed.

from datasets import load_dataset
from trl import SFTTrainer, SFTConfig

ds = load_dataset("Frost2o24/bash-instruct-55k", split="train")

trainer = SFTTrainer(
    model="Qwen/Qwen2.5-Coder-1.5B-Instruct",
    train_dataset=ds,                       # `messages` is auto-detected
    args=SFTConfig(
        output_dir="bash-sft",
        max_length=1024,
        num_train_epochs=2,
        per_device_train_batch_size=8,
    ),
)
trainer.train()

Analyze and slice

import collections

print(collections.Counter(ds["category"]))
print(collections.Counter(ds["utility"]).most_common(15))

scripts = ds.filter(lambda r: r["category"] == "script")

There is no variant_group in this version, so a plain random row split is safe — every row is a distinct (request, command) pair.

Inspect without Python

head -n 1 bash_dataset.jsonl | jq .
jq -r '.utility'  bash_dataset.jsonl | sort | uniq -c | sort -rn | head -20
jq -r '.category' bash_dataset.jsonl | sort | uniq -c

Dataset structure

One JSON object per line in bash_dataset.jsonl:

{
  "messages": [
    {"role": "system",    "content": "You are a Bash expert."},
    {"role": "user",      "content": "Show the last 20 lines of error.log."},
    {"role": "assistant", "content": "tail -n 20 error.log"}
  ],
  "category": "single",
  "utility": "tail"
}
Field Type Description
messages list[{role, content}] The training conversation, always exactly systemuserassistant.
category string single · pipeline · script. See below.
utility string Primary command of the solution (grep, awk, find, for, …). Used to enforce the per-command cap, and useful for slicing or re-balancing training.

Verified schema integrity: all 55,000 lines parse as JSON, all carry the same three keys, all have exactly the system/user/assistant role order, and no message content is empty.

Categories

category Rows Share What it contains
single 22,000 40% One command, no pipe or chaining. tail -n 20 error.log
pipeline 19,250 35% Pipes, &&/||, $(...), xargs. ps aux | awk '$3>50 {print $2}'
script 13,750 25% Multi-line Bash (JSON-escaped \n), mean 9.8 lines.

What's in the scripts

Feature Share of script rows
set -euo pipefail header 100%
for loop 47.8%
if [ … ] test 13.8%
while loop 11.9%
getopts argument parsing 9.7%
trap cleanup 0.1%
Here-docs (<<) 0.1%

Scripts are short, safe-by-default operational snippets — not large programs. trap and here-doc usage is deliberately rare, and there are no function definitions.

System & info utility coverage

Small models routinely fumble the observability and process-management tools. These carry enforced minimum counts with correct, idiomatic flag usage:

Utility Rows Utility Rows Utility Rows
journalctl 2,200 du 806 pstree 782
lsof 673 ss 332 renice 296
nice 293 vmstat 286 ps 242
netstat 239 iostat 184 w 158
dmesg 156 systemctl 111 free 90
df 45 uptime 34 hostname 25

uptime and hostname are lower because their genuine idiomatic command space is small; they are covered with real flag variants rather than padded with synonymous phrasings.

System prompts

Five equivalent Bash-assistant system prompts are rotated near-uniformly (~11.0k rows each) so the model does not overfit one string.


Quality assurance

1. Syntax — bash -n on every command

0 failures out of 55,000 (100% pass), verified with GNU bash 5.2.37 on Debian.

2. Static analysis — ShellCheck at warning level

On a 6,000-row random sample (ShellCheck 0.10.0): 97.95% of commands are completely clean. 123 rows produced a finding, almost all of them a single style nit:

Code Findings What it is
SC2010 115 ls | grep instead of a glob — 93% of all findings
SC2046 3 Unquoted command substitution
SC2062 3 Unquoted grep pattern
SC2164 2 cd without || exit

All findings are warning level; there are no ShellCheck errors. The SC2010 pattern is fixed at the generator level in Bash Instruct III.

3. Argument fidelity

Every pair is gated so the command actually references the concrete nouns the request names — the same filename, extension, user, group, service, process, and port. The shipped file has 0 mismatches.

This gate exists because of a real failure in an earlier build of this generator: roughly 12% of pairs had the right command shape but the wrong concrete noun — a different filename than the request asked for. Neither bash -n nor ShellCheck can detect that, because a wrong filename still parses and still lints clean. argcheck.py closes exactly that gap, and it is the most important quality lesson in this dataset family.

Not validated by execution

Unlike II and III, this version was never executed at scale on real Linux. Many commands (systemctl, journalctl, apt, vmstat) are idiomatic but were validated statically only. The whole-set execution pass applied to II found 43 commands that were malformed in ways static analysis missed; comparable defects are likely present here and unremoved.

Reproduce the audit yourself

# argument-fidelity audit over the shipped file
python argcheck.py --data bash_dataset.jsonl

# re-run bash -n over the whole file
python generate.py validate-all

The standalone validate.py — including the sandboxed execution modes — ships with II and III and can be pointed at this file.


Provenance

How it is built

Generated by a recipe engine (generate.py, included and reproducible). Each recipe family emits (request, command) pairs by combining hand-written phrasing templates (imperative / question / casual) with realistic parameter pools: plausible filenames, directories, ports, services, users, patterns.

Every parameter is drawn once per example and reused in both the request and the command, so the two can never disagree.

The generator enforces:

  • category quotas (40 / 35 / 25),
  • a 4% per-utility cap (2,200 rows) so no command dominates — a real failure mode of earlier runs,
  • minimum coverage floors for the system/info utilities above,
  • SHA-1 deduplication of (request, command) pairs,
  • an argument-fidelity gate (argcheck.py) — the command must reference the same concrete nouns the request names, or the pair is rejected,
  • phrasing diversification so no single opening template dominates,
  • a bash -n syntax gate on every command before it is written.

Regenerating from source

python generate.py plan            # quota table + registered recipes
python generate.py run             # generate to ./bash_dataset.jsonl (resumable)
python generate.py status          # where a run stands
python generate.py validate-all    # re-run bash -n over the whole file

bash_dataset.jsonl is ground truth and a derived progress.json snapshot is rewritten after every batch, so an interrupted run continues where it stopped.


Files

File Description
bash_dataset.jsonl The dataset — 55,000 rows, ~20 MB (no Git LFS needed).
generate.py The generator. Reproducible and resumable.
argcheck.py Argument-fidelity checker — generation gate and standalone auditor.

generate.py and argcheck.py are pure Python 3 with no third-party dependencies. Loading the dataset requires only datasets (or nothing at all — it is plain JSONL).


Combining versions

Overlap of (request, command) pairs, measured across the shipped files:

Pair Shared pairs Share of the smaller set
I ∩ III 15,896 29.2% — mostly distinct, safe to merge
I ∩ II 18,200 33.2%
II ∩ III 50,715 92.5% — never concatenate those two

This is version I's main remaining use. Because it overlaps III by only ~29%, deduplicating the two together yields roughly 93.5k unique pairs — meaningfully more volume than either alone. Weight it below III, which is measurably higher quality.

from datasets import load_dataset, concatenate_datasets

a = load_dataset("Frost2o24/bash-instruct-III-55k", split="train")
b = load_dataset("Frost2o24/bash-instruct-55k", split="train")
b = b.add_column("variant_group", [f"v1-{i}" for i in range(len(b))])

merged, seen = concatenate_datasets([a, b]), set()
merged = merged.filter(
    lambda r: not ((k := (r["messages"][1]["content"], r["messages"][2]["content"])) in seen
                   or seen.add(k))
)
print(len(merged))   # ~93.5k unique pairs

Intended uses & limitations

Intended uses

Teaching a small model to map natural-language requests to correct single Bash commands, short pipelines, and small scripts — including the system/info utilities listed above. In this dataset family its best role is as supplementary volume deduplicated alongside III, rather than as a primary training set.

Limitations

Please read these before reporting results.

  • Superseded. III is better on every measured axis. Use I for extra volume, not as your primary corpus.
  • Not executed. Static validation only; comparable to the 43 malformed commands that whole-set execution later found in II. Some are likely still present here.
  • Synthetic. Variety comes from recombining templates and token pools, not from human authorship. Phrasing is diversified — 98.7% of request strings are unique and no 4-word opening exceeds 1.4% of rows — but the underlying request shapes come from a finite set of families, and ~24% of commands recur under different phrasings.
  • Valid ≠ semantically correct. bash -n, ShellCheck, and the argument gate prove that commands parse, lint, and use the nouns the request named. None of them prove the command's logic satisfies the intent. Some pairs are plausible-but-approximate — an awk column index, for instance, assumes a particular log layout. There is no human correctness audit.
  • Single-turn, one canonical answer. No explanations, alternatives, negative examples, reasoning traces, or multi-turn dialogue.
  • GNU/Linux-centric. Commands assume GNU coreutils and a systemd-based distribution. BSD/macOS flag differences (sed -i, stat, ps) are not covered, and neither are zsh/fish.
  • Short scripts only. Mean 9.8 lines, no function definitions, minimal trap and here-doc coverage. Not a source for large structured shell programs.
  • Not safety-tuned. The corpus contains destructive-capable commands (rm, chmod, chown, kill, dd) as legitimate answers to requests that ask for them. A model trained on it will emit such commands readily. Add refusal/confirmation behaviour separately if your deployment needs it, and never auto-execute model output.

Citation

If you use this dataset, please cite it:

@misc{pimplapure2026bashinstruct1,
  title        = {Bash Instruct: A Synthetic Instruction-Tuning Dataset for
                  Natural Language to Bash Generation},
  author       = {Pimplapure, Yash},
  year         = {2026},
  publisher    = {Hugging Face},
  howpublished = {\url{https://huggingface.co/datasets/Frost2o24/bash-instruct-55k}},
  note         = {55,000 chat-formatted examples; 100\% \texttt{bash -n} valid,
                  97.9\% ShellCheck-clean. Superseded by Bash Instruct III}
}

License

MIT.


Supporting this work

This dataset — generation, whole-set Linux execution, and the fine-tuning runs used to check that it actually teaches the task — was built and validated on modest consumer hardware, which is the main thing limiting how far the next version can go.

If your team has an NVIDIA DGX Spark or an AMD Ryzen AI Max+ ("Strix Halo") AI dev kit to spare, it would go directly into larger validated corpora, real fine-tuned baselines, and published eval numbers for this dataset family. Reach out via the dataset discussions tab. No obligation either way — the data stays MIT and freely available regardless.

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