Tag: bash

Shell globbing breaks inside docker exec because of how args are parsed, here's how to pass wildcards and asterisks correctly.

FFmpeg audio processing, normalize levels, convert formats, mix tracks, extract audio from video, and apply filters from the command line.

Create, modify, and delete users and groups on Linux, useradd, usermod, groupadd, sudo access, and /etc/passwd explained.

Your logs are in journald, not /var/log. journalctl queries that work, awk patterns that hold up, and five popular one-liners that quietly return nothing.

Bash tricks that save keystrokes, history expansion, brace expansion, process substitution, and the shortcuts your fingers will thank you for.

Set, verify, and sync your timezone in Ubuntu using timedatectl, one command to fix the clock on a newly provisioned server.

Build a video slideshow from static images with a voiceover track using FFmpeg, concat filters, fade transitions, and audio sync.

mogrify from ImageMagick batch-processes images, resize, convert, compress, and apply effects to entire directories at once.

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

Essential bash utilities for Ubuntu newcomers, file management, text processing, process control, and the commands you'll type every day.

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.

Control Linux audio volume and mic boost from the terminal with ALSA's amixer, no GUI needed, no remembering cryptic card numbers.