Master programming syntax, solve interactive challenges & run live code in Syntaxis Explore Arena →

menu_book Course Curriculum (Linux Command Line) expand_more

Filesystem

pwd ls detailed cd directories mkdir parents touch file copy file move file remove file

Text Processing

cat file head lines tail lines grep pattern cut fields sort lines uniq counts wc counts

Pipes & Redirection

stdout redirect append redirect stderr redirect pipe commands tee output here document command substitution xargs

Permissions

chmod symbolic chmod numeric chown chgrp umask execute permission setuid concept sticky bit

Processes

ps process list pgrep kill signal jobs background process foreground job nice priority top batch view

Archives & Search

tar create tar extract gzip gunzip find by name find by size locate concept du disk usage

Networking

ip address ss sockets curl request wget download ping host dig DNS ssh command scp copy

Administration

systemctl status journalctl unit df filesystem free memory environment variables export PATH cron entry shell script strict mode

Linux Command Line / Administration

shell script strict mode

Learn shell script strict mode in Linux Command Line with a dedicated explanation, a topic-specific example, edge guidance, and a mastery check.

12 min read • Advanced

linux-064.sh

shell

#!/usr/bin/env bash
set -Eeuo pipefail
trap 'echo "failed at line $LINENO" >&2' ERR
printf "safe script\n"

What to watch

Content source & attribution

Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

shell script strict mode Mastery Check →