How to write a backup script in linux

You can use some freely available software programs, such as fwbackups and Sbackup.

How to write a backup script in linux

An effective backup scheme will take into consideration the following situational limitations [47]: Backup window The period of time when backups are permitted to run on a system is called the backup window. This is typically the time when the system sees the least usage and the backup process will have the least amount of interference with normal operations.

The backup window is usually planned with users' convenience in mind. If a backup extends past the defined backup window, a decision is made whether it is more beneficial to abort the backup or to lengthen the backup window.


Performance impact All backup schemes have some performance impact on the system being backed up. For example, for the period of time that a computer system is being backed up, the hard drive is busy reading files for the purpose of backing up, and its full bandwidth is no longer available for other tasks.

Such impacts should be analyzed. Costs of hardware, software, labor All types of storage media have a finite capacity with a real cost. Matching the correct amount of storage capacity over time with the backup needs is an important part of the design of a backup scheme.

Any backup scheme has some labor requirement, but complicated schemes have considerably higher labor requirements. The cost of commercial backup software can also be considerable. Network bandwidth Implementation[ edit ] Meeting the defined objectives in the face of the above limitations can be a difficult task.

The tools and concepts below can make that task more achievable. Scheduling Using a job scheduler can greatly improve the reliability and consistency of backups by removing part of the human element.

Executing the Script

Many backup software packages include this functionality. The power to copy all data off of or onto a system requires unrestricted access. Using an authentication mechanism is a good way to prevent the backup scheme from being used for unauthorized activity.

Chain of trust Removable storage media are physical items and must only be handled by trusted individuals. Establishing a chain of trusted individuals and vendors is critical to defining the security of the data.

Measuring the process[ edit ] To ensure that the backup scheme is working as expected, the following best practices should be enacted [48] [49] [50]: Backup validation also known as "backup success validation" Provides information about the backup, and proves compliance to regulatory bodies outside the organization: Thus many organizations rely on third-party or "independent" solutions to test, validate, and optimize their backup operations backup reporting.

Reporting In larger configurations, reports are useful for monitoring media usage, device status, errors, vault coordination and other information about the backup process. Logging In addition to the history of computer generated reports, activity and change logs are useful for monitoring backup system events.

Validation Many backup programs use checksums or hashes to validate that the data was accurately copied. These offer several advantages. First, they allow data integrity to be verified without reference to the original file:We will create a shell script using variables, the tar command and the date command to create a dated backup file of a directory, with its subdirectories.

A shell script is essentially a file containing a list of commands that are run in sequence. Script to check the Backup and Restore progress in SQL Server. Many times it happens that your backup (or restore) activity has been started by another Database Administrator or by a job, and you cannot use the GUI anything else to check the progress of that Backup / Restore.

This tutorial shows you how to backup your file system (partially or totally) on ZIP drives (you can replace Zip by floppies, or USB key if you prefer) and most important, how to restore your system from scratch in case of hard disk failure (or other cataclysms).

GUI over libdar are nice to use, to backup once.

how to write a backup script in linux

Scripting using dar is better as it can run in background and be scheduled every. RMAN failure of backup plus archivelog command due to insufficient storage space for RMAN backup, Solution: Reclaim space and initiate backup again.

If you have a series of commands you regularly run in order, it is helpful to create a shell script containing these commands. Then, you only have to run the script file to run the commands. Creating the Shell Script File. For this example, we are going to create a shell script to .

how to write a backup script in linux

Shell Scripts. One of the simplest ways to backup a system is using a shell script. For example, a script can be used to configure which directories to backup, This is a simple example of a backup shell script; however there are .

linux - How to write a script for backup using bacula? - Stack Overflow