bash unix 脚本中的回车
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Carriage return in unix scripting
提问by Houman
I have a file like this
我有一个这样的文件
<VirtualHost *:80>
ServerAdmin webmaster@localhost
DocumentRoot /var/www/
<Directory />
Options FollowSymLinks
AllowOverride None
</Directory>
</VirtualHost>
I would like to achieve this:
我想实现这一目标：
<VirtualHost *:80>
ServerAdmin [email protected]
ServerName domain.com
ServerAlias www.domain.com
DocumentRoot /var/www/
<Directory />
Options FollowSymLinks
AllowOverride None
</Directory>
</VirtualHost>
I tired this but the line carriage doesn't work properly. I even tried \r\n without luck.
我累了，但线车不能正常工作。我什至试过 \r\n 没有运气。
sudo sed -i "s/webmaster@localhost/[email protected]\rServerName domain.com \rServerAlias www.domain.com/" /etc/apache2/sites-available/domain
I get this weird character there between:
我在这中间得到了这个奇怪的字符：
<VirtualHost _default_:443>
ServerAdmin [email protected] ^MServerName domain.com ^MServerAlias www.domain.com
DocumentRoot /var/www/
<Directory />
Options FollowSymLinks
AllowOverride None
</Directory>
</VirtualHost>
What am I missing?
我错过了什么？
Many Thanks,
非常感谢，
回答by Mat
The Unix text file line ending char is \n, ASCII 0x0A (new line/line feed). \r0xOD is a carriage return.
Unix 文本文件行结束符是\n, ASCII 0x0A（换行/换行）。\r0xOD 是回车。
Replace \rby \nin your sed expression and you should be good to go.
在您的 sed 表达式中替换为\rby \n，您应该很高兴。
回答by Birei
One way with sed(GNU version):
一种方式sed（GNU版本）：
Content of script.sed:
内容script.sed：
## Match line with string 'serveradmin' ignoring case.
/serveradmin/I {
## Append text after this line.
a\
## Literal text to append until a line not ending with '\'
\tServerName domain.com\
\tServerAlias www.domain.com
}
Run the script:
运行脚本：
sed -f script.sed infile
And result:
结果：
<VirtualHost *:80>
ServerAdmin webmaster@localhost
ServerName domain.com
ServerAlias www.domain.com
DocumentRoot /var/www/
<Directory />
Options FollowSymLinks
AllowOverride None
</Directory>
</VirtualHost>
