[Linux] 명령어 모음

User Name Change

 # usermod -l [newname] [oldname]

User Group Change

# usermod -G [Primary Group] [ username ]

Hostname Change

1) hostname (Temporary)

# hostname [ New hostname ]

2) vi /etc/hostname

# vi /etc/hostname

File Find, Change TXT (find + sed)

$ find . -type f -exec sed -i 's/abc/def/g' {} \;

 

Grep

1) Empty Line Delete

$ cat ${FILE} | grep -v ^$

$ grep -e "^$" -v ${FILE}

 

String Length

$ echo ${VAR} | awk '{print length}"

 

VI

1) 자동 주석

기능 끄기

: set formatoptions-=r

 

기능 켜기

: set formatoptions+=r

 

Watch

watch -n 5 '명령어'