weixin_44695793的博客

https://www.jianshu.com/p/70136d731ca0

1、字段 grep： 案例： str1="abcdefgh" str2="def" result=$(echo $str1 | grep "${str2}") if [[ "$result" != "" ]];then echo "包含" else echo "不包含" fi 2. 字符串运算符 =~: 案例： str1="abcdefgh" str2="def" if [[ $str1 =~ $str2 ]];then echo "包含" else echo "不包含"