Linux内自带的系统变量
Ubuntu 20root 模式[Wed Mar 24 15:46:31 root@u20-0-52 u20 ]# setBASH=/usr/bin/bashBASHOPTS=checkwinsize:cmdhist:complete_fullquote:expand_aliases:extquote:force_fignore:globasciiranges:histappend:hostcomplete:interactive_comments:progcomp:promptvars:sou
