Tag: bash

Finding the PID of a Process Using a Specific Port in Linux

Something's squatting on port 8080 and you need to know what. ss, lsof, and fuser one-liners to find and kill the culprit fast.

Understanding Grep: A Comprehensive Guide

grep is more powerful than you think — regex patterns, context flags, recursive search, and piping tricks that save hours of log digging.

Essential Linux Commands for Daily Use

The Linux commands every sysadmin reaches for daily — file ops, process management, networking, and text manipulation you can't live without.

Multiple Actions with a Single docker exec Call

Run multiple commands in one docker exec call using sh -c — pipe commands, chain with && or ;, and avoid repeated container roundtrips.

Mastering xargs in Linux

xargs turns stdin into arguments — build complex pipelines, run parallel jobs, and handle filenames with spaces without breaking everything.

FFmpeg: Advanced Video & Audio Manipulations

Advanced FFmpeg techniques — filter graphs, stream mapping, subtitle burning, speed adjustment, and batch processing scripts.

FFmpeg: Comprehensive Audio Processing Techniques

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

User and Group Management in Linux

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

SumGuy’s Guide to Linux Log Analysis

journalctl, grep, awk, and tail -f — read your Linux logs like a pro and find the error before it pages you at 3 AM.

Understanding the Mogrify Tool in Linux: A Guide to Image Manipulation

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

Ubuntu & Bash tutorial & basic utilities

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

Archive & Compression utilities

tar, gzip, bzip2, xz, zip — demystified. When to use each compression tool, speed vs ratio trade-offs, and the flags you'll actually need.