3 Shell & command line

6 entries match these filters

• 0052 Slice and summarize text with grep, sort, uniq, cut, awk and sed A handful of classic tools can filter, count, extract and rewrite text right in the terminal. This guide shows the patterns you… Intermediate · How-to · Linux, macOS Article Finding files & text · Text processing 15 Oct 2026
• 0053 Set up SSH keys: ssh-keygen, ssh-copy-id and ~/.ssh/config SSH keys let you log in to servers and push to Git hosts without typing a password. Create an ed25519 key, install… Beginner · How-to · Linux, macOS, Windows Article Keys & config 15 Oct 2026
• 0059 Incremental snapshot backups with rsync A bash script that copies a folder into dated snapshots with rsync, hard-links unchanged files to the previous snapshot to save space,… Advanced · How-to · Linux, macOS Script Backups & syncing · Shell scripting 15 Oct 2026
• 0060 Find the biggest files and folders eating your disk A short bash script that lists the largest files over a size limit and the largest subfolders, using find, du, sort and… Beginner · How-to · Linux, macOS Script Finding files & text · Text processing 15 Oct 2026
• 0109 A vzdump wrapper script with checks, retention and a log file A Bash wrapper around vzdump that checks the target storage first, backs up chosen guests or all guests with zstd and keep-last… Intermediate · How-to · Linux Script Backup & restore · Shell scripting 15 Oct 2026
• 0178 Create a sudo user with an SSH key and disable password login A bash script that creates an admin user in the sudo or wheel group, installs their SSH public key and can switch… Advanced · How-to · Linux Script Keys & config · Users, sudo & hardening 15 Oct 2026