shell的问题

[wugui414]

if[ "$1"=="hello" ];then
echo "Hello,how are you?"
elif[ "$1"=="" ];then
echo "You MUST input parameters, ex>$0 some word"
else
echo "The only parameter is 'hello'"
fi


这语法有错吗？为什么总是报这样的错误？
sh08.sh: line 9: syntax error near unexpected token `then'
sh08.sh: line 9: `if[ "$1"=="hello" ];then'

[steptodream]

注意空格！！把你的和下面的对比一下

#!/bin/sh
if [ "$1" == "hello" ];then
  echo "Hello,how are you?"
elif [ "$1" == "" ];then
  echo "You MUST input parameters, ex>$0 some word"
else
  echo "The only parameter is 'hello'"
fi

[wugui414]

[Quote=引用 1 楼 steptodream 的回复:]

注意空格！！把你的和下面的对比一下
C/C++ code

#!/bin/sh
if [ "$1" == "hello" ];then
echo "Hello,how are you?"
elif [ "$1" == "" ];then
echo "You MUST input parameters, ex>$0 some word"
else
echo "The only pa……
[/Quote]

谢了，发现问题了 ”if 这里有空格[]“

[steptodream]

[Quote=引用 2 楼 wugui414 的回复:]

引用 1 楼 steptodream 的回复:

注意空格！！把你的和下面的对比一下
C/C++ code

#!/bin/sh
if [ "$1" == "hello" ];then
echo "Hello,how are you?"
elif [ "$1" == "" ];then
echo "You MUST input parameters, ex>$0 some wo……
[/Quote]
不止那一个地方
==前后也应该有空格

[wugui414]

[Quote=引用 3 楼 steptodream 的回复:]

引用 2 楼 wugui414 的回复:

引用 1 楼 steptodream 的回复:

注意空格！！把你的和下面的对比一下
C/C++ code

#!/bin/sh
if [ "$1" == "hello" ];then
echo "Hello,how are you?"
elif [ "$1" == "" ];then
echo "You MUST input p……
[/Quote]

再次！再次！感谢！！！！！！

[Linux-Torvalds]

新手的困惑。