判断一个变量值是否包含a字符

Fjcyz

如题.. 谢谢

springwind426

1. 
   
2. bash 环境
   
3. 
   
4. [ "X${变量/字符/}" == "X${变量}" ] || echo "包含"
   
5. 
   

复制代码

sunceenjoy

if echo $a |grep -q 'a'; then echo ok ;fi

ccjsj1

1. echo $A | grep a && echo yes || echo no

复制代码

alfred1980

echo $a|awk '$0~/a/'

Shell_HAT

1. 
   
2. str=abc; if [[ "$str" =~ "a" ]];then echo yes; fi
   

复制代码

ubuntuer

1. [[  $str =~ "a" ]] && echo yes

复制代码