How to prevent others from modifying some important files in Linux

Wind Network (ithov.com) original article: In the process of managing Linux systems, for some important key documents, configuration files and important personal data, often do not want users to make arbitrary changes, this time we need to the file to protect the rights to prevent tampering with the file, We can change the properties of the file to 600.

For example:

[Root@localhost/]# chmod 600/usr/local/webserver/nginx/conf/nginx.conf

This allows us to set the/usr/local/webserver/nginx/conf/nginx.conf file to 600 permissions to prevent modification.

Also, if Linux uses a ext2, ext3, or Ext4 file system, you can use the "chattr" command:

usage:chattr [-RVF] [-+=aacddeijssu] [v-version] files ...

Add the I attribute to the important file, even if the root user cannot modify or delete the file directly to effectively prevent accidental modification or http://www.aliyun.com/zixun/aggregation/18137.html "" "" "" "" "" ". The specific orders are as follows:

# chattr +i passwd

Add the attribute of I to the passwd file

Remove the I attribute using the following command:

# chattr–i passwd

Remove the properties of the passwd file I and make changes to the file.