摘要: help命令可以查看帮助 help test 正确做法: #!/bin/sh STRING= if [ -z "$STRING" ]; then echo "STRING is empty" fi if [ -n "$STRING" ]; then echo "STRING is not empty 阅读全文
posted @ 2019-04-23 15:45 意如柳 阅读(5187) 评论(0) 推荐(0)