This project contains five shell scripts written as part of a Linux System Administration assignment. Each script solves a real-world system task like user management, kernel checking, login tracking, and more.

• Extracts all usernames from the /etc/passwd file.
• Saves the output to userlist.txt.

• Displays the 5 most recent system reboots.
• Uses the last reboot command.
• Output saved to boot_history_report.txt.

• Shows the last 10 failed SSH login attempts from system logs.
• Works with /var/log/auth.log or /var/log/secure.

• Compares the current running kernel version with the latest available.
• Supports Debian, RHEL, and Arch Linux.
• Logs the result to /var/log/kernel_version_check.log.

• Calculates total login time (in minutes) for each user.
• Parses last command output.
• Saves the summary to weekly_login_report.txt.

For each script:

chmod +x script_name.sh
./script_name.sh