Linuxコマンドチートシート

説明付きの検索可能なLinux/Bashコマンドリファレンス。

Files & Dirs

ls -laList all files with details

cd /pathChange directory

pwdPrint working directory

mkdir -p dir/subCreate nested dirs

rm -rf dirRemove dir recursively

cp -r src dstCopy recursively

mv src dstMove/rename

find . -name '*.txt'Find files by name

ln -s target linkCreate symlink

File Content

cat filePrint file content

less fileView file paginated

head -n 20 fileFirst 20 lines

tail -f fileFollow file (live)

grep -rn 'pattern' .Search in files

wc -l fileCount lines

sort fileSort lines

uniqRemove duplicates

awk '{print $1}' filePrint first column

Permissions

chmod 755 fileSet permissions

chmod +x fileMake executable

chown user:group fileChange owner

ls -laView permissions

umask 022Set default mask

Process

ps auxList processes

topProcess monitor

kill -9 <PID>Force kill

pkill -f nameKill by name

nohup cmd &Run in background

jobsList jobs

bg / fgBackground/foreground

Network

curl -I <url>HTTP headers

wget <url>Download file

netstat -tlnpListening ports

ss -tlnpSocket stats

ping hostPing host

traceroute hostTrace route

nmap -sV hostPort scan

System

df -hDisk usage

du -sh *Dir sizes

free -hMemory usage

uname -aSystem info

uptimeSystem uptime

whoamiCurrent user

sudo !!Repeat as sudo

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