Mastering Linux Shell Scripting - Second Edition

Creating the backup2.sh using elif

We can revisit the script that we created to run the earlier backup. This script, $HOME/bin/backup.sh, prompts the user for the file type and the directory in which to store the backup. The tools used for the backup are find and cp.

With this new-found knowledge, we can now allow the script to run the backup using the command tar and the level of compression selected by the operator. There is no requirement to select the file type, as the complete home directory will be backed up, with the exclusion of the backup directory itself.

The operator can select the compression based on three letters: H, M, and L. The selection will affect the options passed to the tar command and the backup file created. The selection ...