摘要：wait for ip in ${rollsite[*]}; do echo ${ip} ssh -p ${ssh_port} -tt ${user}@${ip} << eeooff source /data/projects/fate/init_env.sh cd /data/projects/f 阅读全文

摘要：http://c.biancheng.net/view/1009.html 阅读全文

摘要：拓展： cp 简化： c'p -rv /data/project/test {.txt,_bak.txt} 阅读全文

摘要：echo "上一次后台pid is $!"echo "当前进程pid is $$"echo "last command return code is :$?"echo "bash file name is $0"echo "all var is: $*"echo "var number is : $ 阅读全文