bash-linux

SKILL.md

| List all | ls -la | | Find files | find . -name ".js" -type f | | File content | cat file.txt | | First N lines | head -n 20 file.txt | | Last N lines | tail -n 20 file.txt | | Follow log | tail -f log.txt | | Search in files | grep -r "pattern" --include=".js" | | File size | du -sh | | Disk usage | df -h |

| List processes | ps aux | | Find by name | ps aux \| grep node | | Kill by PID | kill -9 | | Find port user | lsof -i :3000 | | Kill port | kill -9 $(lsof -t -i :3000) | | Background | npm run dev & | | Jobs | jobs -l | | Bring to front | fg %1 |

| grep | Search | grep -rn "TODO" src/ | | sed | Replace | sed -i 's/old/new/g' file.txt | | awk | Extract columns | awk '{print $1}' file.txt | | cut | Cut fields | cut -d',' -f1 data.csv | | sort | Sort lines | sort -u file.txt | | uniq | Unique lines | sort file.txt \| uniq -c | | wc | Count | wc -l file.txt |

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