新手提问 shell scripts

angelppp2008

vi test-ifthen.sh


if ["$1"=="hellp"];then
echo "Hello! How are you?"
elif ["$1"==""];then
echo "You must input paramenters"
else
echo "The only accept parameter is hello"
fi

sh test-ifthen.sh hello



[hello==hello]:command not found
[hello==]:command not found


这个问题是怎么回事？！ 谢谢！！

seaquester

注意空格， '[' 和后面的条件之间必须有空格：

if [ "$1" == "hello" ];then
        echo "Hello! How are you?"
elif [ "$1" == "" ];then
        echo "You must input parameters"
else
        echo "The only accept parameter is hello"
fi

angelppp2008

谢谢 楼上！！

宝宝花开

偶来补充一下，［ 其实是一个命令 所以后面要空格， 就是 test命令，你可以man test下看看