Question

不区分大小写如何比较shell脚本中的字符串

Answer 1

方法一：
你可以将两个字符串统统转成大写(或小写), 再比较

#!/bin/bash

xxx= "Temp "
yyy= "temp "

x_tmp=$(echo $xxx | tr [a-z] [A-Z])
y_tmp=$(echo $yyy | tr [a-z] [A-Z])

if [ "$x_tmp " = "$y_tmp " ];then
echo "PASS "
else
echo "FAIL "
fi

优点：通用

方法二：
用expr的话，得这样：

xxx=Temp
if [ `expr match $xxx "[T|t][E|e][M|m][P|p]$ "` -ne 0 ]
then
echo "PASS "
else
echo "FAIL "
fi

优点：高效，但是限制为特定字符序列