Script automation: back up a file every 2 minutes

Requirements: back up the file directory / home/backups/balalala to the / home directory every 2 minutes

Prepare for

1. Create the source directory

# mkdir / home/backups/balalala

Create the original file

# touch / home/backups/balalala/first.sh

2. Create a backup directory

# mkdir / home

First, write scripts with backup function

Create script

# vi / home/backup.sh write command

#! / bin/sh

Cp-r / home/backups/balalala/* / home/beifen

# backup the files in the / home/backups/balalala directory to the / home/beifen directory to execute the script file

For example: sh / home/backup.sh

Second, set the timing to execute this script.

The setup script is executed every 2 minutes.

Install crond

If the crond service is not installed, install the service first.

Check service status: service crond status modifies crontab content

Enter the command: crontab-e

Enter and continue to enter the command:

/ 2 * / home/backup.sh

# set to execute the script file every 2 minutes

Then, save exit: wq

# the first five fields of the sh script represent minutes (0-59), hours (0-23), day (1-31), month (0-12), and day of the week (0-6). Restart the crond service for the directory where the script resides

Enter command: service crond restart

III. Verification

1. Switch to / home/beifen

# cd / home/beifen

2. List files

# ls

You can see that the file first.sh is currently available.

3. Add new files to the / home/backups/balalala/ directory

# touch / home/backups/balalala/second.sh

4. Check again after 2 minutes for second.sh in the / home/beifen directory

Second.sh verification is successful!