简单的shell脚本运行抱错，请帮忙看下

[wyfwx]

#！/bin/sh
#this is test
if["1" > "0"]
then
echo "out 1"
fi



./test123运行提示 if[1:command not found

[daviddb7]

加空格

[Arnold9009]

[前后要加空格
在linuxshell里，空格很重要

[wyfwx]

加空格后 [1:command not found

[reactiveF]

#！/bin/sh
#this is test
if [ "1" > "0" ] #加空格
then
echo "out 1"
fi

# chmod +x test.sh
# ./test.sh
out 1

[向良玉]

if语句里 [ "1" > "0" ] 两边都需要空格的

[rucypli]

if[ "1" > "0" ]
then
echo "out 1"
fi

[wyfwx]

thank every body!