Question

我正在自动化在我公司创建虚拟主机的过程，我想将这一行：ServerAlias sitename.booking.local添加到名为sitename.com.conf的文件中，如下所示：

<VirtualHost *:80>
   ServerName www.sitename.com
   ServerAlias sitename.com
   ServerAlias sitename.booking.local
   DocumentRoot /site/http/travel/itn
   CustomLog logs/access_sitename_log combined
   DirectoryIndex default.php index.php index.html index.phtml index.cgi index.htm
   ScriptAlias /awstats/ /usr/local/awstats/wwwroot/cgi-bin/
   <Directory /site/http/travel/itn >
      AllowOverride All
   </Directory>
</VirtualHost>

我希望该行在<virtualhost></virtualhost>范围内，并将其添加到文件的最后一行ServerAlias下，如何实现？

Answer 1

这个awk应该可以工作：

awk  -v a="mysite" '/<VirtualHost /{v=1}
     v && /^ *ServerAlias/{{$0="   ServerAlias " a ".booking.local" RS $0; v=0} 
     /<\/VirtualHost>/{v=0} 1' file

<强>输出：

<VirtualHost *:80>
   ServerName www.sitename.com
   ServerAlias sitename.booking.local
   ServerAlias sitename.com
   DocumentRoot /site/http/travel/itn
   CustomLog logs/access_sitename_log combined
   DirectoryIndex default.php index.php index.html index.phtml index.cgi index.htm
   ScriptAlias /awstats/ /usr/local/awstats/wwwroot/cgi-bin/
   <Directory /site/http/travel/itn >
      AllowOverride All
   </Directory>
</VirtualHost>

Answer 2

假设我们想在文档中的某个位置插入一行，那么你可以使用这样的sed添加到第4行：

sed '4a\     ServerAlias sitename.booking.local' myfile.xml > myfile.xml

这显然是危险的，如果文件结构将来可能会发生变化，那么让我们在ServerName之后立即添加这一行，这样就好像

sed -i 's/ServerName www.sitename.com/ServerName www.sitename.com\\n   ServerAlias sitename.booking.local/g' myfile.xml

Bash：如何在文件中的特定位置插入一行？

2 个答案: