Tag: linux
All the articles with the tag "linux".
Linux Basics Part 8 — Bash Scripting Basics
Variables and quoting, if/for/while, functions, exit codes, set -e/-u, backup and monitoring script examples, and debugging with bash -x. The essential...
Linux Basics Part 7 — Package Management
The principles behind apt (Debian/Ubuntu) and dnf/yum (RHEL family), how repositories and dependency resolution work, the difference between apt-get...
Linux Basics Part 6 — Systemd and Service Management
What systemd does, managing services with systemctl, unit file structure, querying logs with journalctl, and creating custom services — all in...
Linux Basics Part 5 — Network Tools
curl/wget, ss/netstat, ping/traceroute, dig/nslookup, and SSH basics. The network tools you'll reach for first when you land on a server.
Linux Basics Part 4 — Text Processing and Pipes
Pipes and redirection, practical uses of grep/sed/awk, the power of xargs, and summarizing logs with sort/uniq/wc. The tools where the Linux philosophy...
Linux Basics Part 3 — Processes and Signals
Observing processes with ps and top, understanding PIDs and signals (SIGTERM/SIGKILL/SIGHUP), and managing long-running tasks with nohup and background...
Linux Basics Part 2 — File Permissions and Users/Groups
What the rwx symbols mean, symbolic and numeric modes of chmod, how chown and sudo work, how umask determines default permissions, and the pitfalls of...
Linux Basics Part 1 — The Shell and Filesystem Structure
The role of bash/zsh, the directory hierarchy branching from root, $PATH and environment variables, and a look behind the basic commands you type every...