Tag: linux

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.

Find your Linux distro version, kernel version, and architecture with uname, lsb_release, /etc/os-release, and hostnamectl.

Fix 'Argument list too long' in bash when cp or rsync chokes on thousands of files, glob loops, find + xargs, and the ARG_MAX reason behind it.

Your disk is full and du is lying to you. ncdu, df, and find tricks to track down space hogs before your server goes down at 2 AM.

Master bash for loops, while loops, and seq for sequential counting, iterate over files, ranges, and arrays without losing your mind.

Out of RAM and no time to reimage? Add swap via a file on any partition using mkswap, swapon, and fstab, done in under 5 minutes.

Repair and optimize all MySQL databases at once with mysqlcheck, a one-liner that runs on every table without logging into MySQL.

Old kernels fill /boot until apt upgrades fail. Clear them with apt autoremove or dpkg purge on Ubuntu and Debian, plus the Proxmox quirk and how many to keep.

Extract tar.gz, tar.bz2, tar.xz, flags demystified, compression compared, directory extraction, and the gotchas that trip you up.

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

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