Automate safe system upodates with a single script (for APT + systemd systems)

THE PROBLEM Keeping a Linux system fully updated usually means doing several things by hand: Update APT package lists Upgrade installed packages Remove unused dependencies and cached files Update Flatpak apps (if you use Flatpak) Update firmware via fwupd (if available) Decide whether to reboot or shut down None of that is hard, but it is repetitive and easy to skip steps, especially firmware updates. This script turns that whole workflow into a single, safe command. REQUIREMENTS This script assumes: Package manager Uses APT Example: Debian, Ubuntu, Linux Mint and similar Init system Uses systemd (for systemctl reboot/poweroff) Shell bash (script uses “#!/usr/bin/env bash” and “set -euo pipefail”) You can run it with: bash script.sh Privileges Your user has sudo rights Optional components Flatpak (optional) If not installed, Flatpak steps are skipped fwupd (fwupdmgr, optional) If not installed, firmware steps a...
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Searching patterns inside files: GREP, STRINGS

GREP

$ grep [pattern] FILE
Searches for a pattern in a file and print all matching lines

$ grep -v [pattern] FILE
Prints all lines that do not match the pattern

$ grep [0-9] FILE
Prinst the lines that contain the numbers 0 through 9

$ grep -C 3 [pattern] FILE
Prints searched line and n lines after before the result.


STRING

$ strings FILE | grep [string]
Search human readable patterns in binary files. 

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