【shell】比较两个文件是否相同

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1 、参考：

https://blog.csdn.net/u010783148/article/details/73691154

2、Linux diff比较两个文件是否相同

#!/bin/bash

# ScriptName: file_diff.sh

echo "usage: -$0 file1 file2"

file1=$1

file2=$2

if [ -f $file1 ] && [ -f $file2 ]

then

    diff $file1 $file2 > /dev/null

    if [ $? != 0 ]

    then

        echo "Different!"

    else

        echo "Same!"

    fi

else

    echo "$file1 or $file2 does not exist, please check filename."

fi