Write a shell script named daily-backup.sh that does the following:
- Discovers all users defined on the system excluding system and services users.
- For each of these users, locates the home directory and create an compressed archive for this directory (.tar.gz).
- Creates a global archive that contains all archived users home directories and save it in /var/backup.
- The script should be daily run at 1AM and for each execution, the global archive name should reflect...

Write a shell script that swaps the contents of two files. The shell script should be called swap.sh.
The swap.sh script should take two arguments as input. They indicate the two files to be swapped. You should check that the proper number of arguments have been passed and that the filenames passed on the command line have the proper permissions set. You should also check that any temporary files used during the execution of the script do not exist. If any of these checks fail, then print...