使用 shell 脚本搜索和替换文件内容答案

【问题标题】：Search and replace file content using shell script使用 shell 脚本搜索和替换文件内容
【发布时间】：2016-04-09 14:03:47
【问题描述】：

我想搜索和替换文件中的特定值，这里是文件的内容

filename: /etc/httpd/conf/httpd.conf
#
# Deny access to the entirety of your server's filesystem. You must
# explicitly permit access to web content directories in other
# <Directory> blocks below.
#
<Directory />
    AllowOverride none
    Require all denied
</Directory>

#
# Note that from this point forward you must specifically allow
# particular features to be enabled - so if something's not working as
# you might expect, make sure that you have specifically enabled it
# below.
#

#
# DocumentRoot: The directory out of which you will serve your
# documents. By default, all requests are taken from this directory, but
# symbolic links and aliases may be used to point to other locations.
#
DocumentRoot "/var/www/html"

#
# Relax access to content within /var/www.
#
<Directory "/var/www">
    AllowOverride None
    # Allow open access:
    Require all granted
</Directory>

我想用DocumentRoot /var/www/html/centos替换DocumentRoot /var/www/html

我尝试了以下

sudo sed -i "s#DocumentRoot /var/www/html#DocumentRoot /var/www/html/centos#g" /etc/httpd/conf/httpd.conf

这行不通，谁能指出正确的方向。

谢谢

【问题讨论】：

标签： linux bash shell centos

【解决方案1】：

您要替换的行是：

DocumentRoot "/var/www/html"

它包含双引号。 sed 命令不包含双引号。试试：

sudo sed -i 's#DocumentRoot "/var/www/html"#DocumentRoot "/var/www/html/centos"#g' /etc/httpd/conf/httpd.conf

【讨论】：

【解决方案2】：

没关系，我想通了，我缺少双引号，以下命令有效

sudo sed -i 's#DocumentRoot "/var/www/html"#DocumentRoot "/var/www/html/centos"#g' /etc/httpd/conf/httpd.conf

【讨论】：