自定义bash终端提示符

备忘：

PS1="\$(if [[ \$? == 0 ]]; then echo \"\[\e[1;32m\] :)\"; else echo \"\[\e[1;31m\] :(\"; fi) $(if [[ ${EUID} == 0 ]]; then echo "\[\e[1;31m\]\u \[\e[1;32m\]\w \[\e[1;33m\]# > "; else echo "\[\e[1;36m\]\u \[\e[1;32m\]\w \[\e[1;33m\]$ > "; fi)\[\e[0m\]"

arch wiki自定义教程链接：
https://wiki.archlinux.org/index.php/Color_Bash_Prompt