/etc/profile에 추가
non='\[\033[0;0m\]'
red='\[\033[1;31m\]'
grn='\[\033[1;32m\]'
ylw='\[\033[1;33m\]'
cyn='\[\033[1;36m\]'
PS1="$cyn[$ylw\u$cyn@$ylw\h$cyn:$grn\w$cyn]$red\#$non "
alias rm='rm -i'
alias cp='cp -i'
alias mv='mv -i'
alias ls='ls -F'
alias l='ls -l'
alias ll='ls -al'
