linux if多条件判断

原文地址：http://blog.sina.com.cn/s/blog_7921902d01012nla.html

if 条件判断中有多个条件

#!/bin/bash

score=$1

if [ $score = 5 ]||[ $score = 3 ];then

    echo right

else

    echo wrong

fi

-------------------------------------------------------

#!/bin/bash

score=$1

if [ $score -gt 5 ]||[ $score -lt 3 ];then

    echo right

else

    echo wrong

fi

-------------------------------------------------------

#!/bin/bash

score=$1

if [ $score -gt 15 ]||([ $score -lt 8]&&[ $score -ne 5 ]);then

    echo right

else

    echo wrong

fi

-------------------------------------------------------

或：

#!/bin/bash

count="$1"

if [ $count -gt 15 -o $count -lt 5];then

   echoright

fi

且：

#!/bin/bash

count="$1"

if [ $count -gt 5 -a $count -lt 15];then

   echoright

fi

-------------------------------------------------------
score=$1
if [[ $score -gt 15 || $score -lt 8&& $score -ne 5 ]];then
    echoright
else
    echowrong
fi
记住必须加两个中括号