This demonstrates installing a new crontab file to schedule tasks by replacing the current user's crontab with a predefined file.

This demonstrates editing the current user's crontab file to manage scheduled tasks.

This demonstrates listing the current user's cron jobs using crontab -l.

This demonstrates terminating all processes by name using the killall command.

This demonstrates terminating all processes named foo forcefully using pkill.

This demonstrates terminating processes by name using the pkill command.

This demonstrates checking the scheduling priority (nice value) of a process by its PID using the ps command.

This demonstrates setting the priority of a process to the lowest value using the renice command.

This demonstrates scheduling a system shutdown with a delay and a custom message.

This script shuts down the system immediately with a message.

This demonstrates the basic usage of the shutdown command to initiate a system shutdown.

This demonstrates upgrading all installed packages to their latest versions using apt.

This demonstrates installing the wget package using the apt package manager.

This demonstrates searching for the wget package in the APT package manager.

Update the package list from the repositories without installing or upgrading any packages.

This script displays memory usage in a human-readable format using SI units (powers of 1000).

This demonstrates displaying memory usage in a human-readable format using the free command.

This demonstrates using the free command to display the system's memory usage.

This demonstrates using the du command to display the disk usage of the current directory without traversing subdirectories.

This demonstrates disk usage analysis with depth control using the du command.