Linux system settings backup

Computer Store News: Backup is an important job, but many people have not done it. Once data is lost due to improper use, backup becomes a real life saver. This article discusses strategies for setting up backups and how to choose backup media, and introduces the tar and cpio tools for backups.
Set Backup Policy
Setting up backup policies and plans can increase the likelihood of making backups. Before starting the backup, determine which data to back up, how often to back up, and what media to use for backup. When backing up, you should make a full backup.
Backups are usually scheduled for free time. In most systems, the number of open files is minimal due to the minimum number of users at this time. Because backups take up some system resources, users will find the system unresponsive when running backups.
If the Linux computer has only one user, you can back up the entire system once a week or a month. If you have critical files, you should plan to copy them to a removable disk.
Before backing up, first make sure that the backup device is set up correctly. Most tape backup systems can be found to be correct at the time of installation. After the system boots, open a terminal window and enter the following command:
$dmeg