本例子可以在Linux命令行執行命令時,在. shell 後加入輸入參數
例子代碼如下:
!/bin/bash
if [ $# -lt 2 ]
then echo "usage $0 a b"
exit
fi
a=$1
b=$2
if [ $a -eq $b ]
then echo "$a equals $b"
elif [ $a -gt $b ]
then echo "$a is greater than $b"
else
echo "$a is less than $b"
fi
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如果不輸入參數:. shell 則顯示:usage shell a b,即為使用方法提示.
如果在命令行輸入執行命令時,並帶上輸入參數: . shell 4 2,則輸出:4 is greater than 2