linuxboy823的博客

zabbix启停脚本汇总。。。

bash脚本截取字符串的两种方法 方法一：位置截取 #bin/bash STR="1234567890asdfghjkl" echo "first character ${STR:0:1}" echo "The three characters ${STR:0:3}" echo "第四个字符开始显示:${STR:3}" echo "显示第4到6个字符:${STR:3:3}" echo "显示最后1个字符:${STR:0-1}" echo "显示最后3个字符:${STR:0-3}" echo "从右边数第7个