Tag: linux

Linux su with custom shell

Use su with a specific shell to switch users without the default login shell — useful when /etc/passwd points to something unexpected.

Logrotate & Compression

logrotate keeps your /var/log from eating the disk — configure rotation schedules, compression, and retention for any service log.

MySQL CLI: From Connection to Maintenance

Master MySQL from the command line: connect, query databases, manage users, repair tables, optimize—everything you keep Googling, one reference.

Three ways to upload ISOs to Proxmox

Three ways to upload an ISO to Proxmox — web UI, wget direct download, or SCP from the CLI. When each one wins, plus storage paths and checksum verification.

Recursively delete all empty subdirectories

Clean up empty directories with find and rmdir — safely prune orphaned dirs left after file migrations.

Remove all old installed but unused kernels

Old kernels pile up in /boot and eat disk space — safely remove unused kernels on Ubuntu and Debian with apt and dpkg.

Bulk rename files in bash

Remove spaces and special characters from filenames using bash loops, rename, find, and parameter expansion tricks.

When systemd swallows your service logs

Service restart not showing logs? systemd hides stdout. Learn journalctl, systemctl status, and debugging workflows for silent systemd failures.

Sed 101

sed is the stream editor for making text substitutions, deletions, and insertions in files — the patterns you'll use 90% of the time.

SSH keys and secure file copy

Generate SSH keys, set up passwordless auth, configure SSH, and transfer files securely with SCP — the foundation of headless Linux work.

Why You Should Switch to ZShell (zsh)

Switch your default shell to zsh on Linux — why zsh beats bash, installation, Oh My Zsh setup, essential plugins, and the gotcha that still catches everyone.

Steam on Linux: It Actually Works Now

Steam crossed 5% Linux usage in March 2026. Proton runs most Windows games without touching a config file. Here's the setup that makes Linux gaming not suck.