bash 判断字符串

Submitted by lepton on Wed, 05/11/2016 - 16:24



[[ "${str}" =~ ^-?[[:digit:]]*$ ]]  //正则表达式 不能加引号

expr match "$str" "^-\?[0-9]*$"

判断字符串 包含 123

[[ "${str}" == *"123"* ]]


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