shell注释

1. 单行注释

众所周知,#  比如想要注释:echo “ni”

# echo "ni"

 

2. 多行注释:

法一:

: << !

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!

例如:

linux101:/home/wsj # sh dian
ni
ni
ni
ni
ni
ni

linux101:/home/wsj # more dian
#!/bin/ksh
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"

:<<!
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"
!

法二:

: '

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'

例如:

linux101:/home/wsj # sh dian
ni
ni
ni
ni
ni
ni

linux101:/home/wsj # more dian
#!/bin/ksh
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"

: '
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"
'

 2014-02-03-06补充:

法三:

if false; then

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fi

linux101:/home/wsj # sh dian
ni
ni
ni
ni
ni
ni

linux101:/home/wsj # more dian
#!/bin/ksh
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"

if false; then
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"
echo "ni"
fi

 

 法四:

: << 字符  #这里的字符可以是数字或者是字符都可以

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字符                        

 

2014-09-10 教师节快乐,由chaosink哥们提供补充:

法五:

((0)) & {

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}

 

 
posted @ 2017-05-20 15:47  靠岸啊啊  阅读(171)  评论(0编辑  收藏  举报