Linux Mastery - Linux I/O Mastery — stdin, stdout, stderr, Pipes, Redirects #04
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In this video, we dive deep into professional IT workflows to help you learn faster and code smarter. Whether you're a DevOps engineer, a SysAdmin, or a curious developer, our "No Filler" approach ensures you get the facts without the fluff.
Pipes and redirects are what make Linux composable — small tools combined
into pipelines that solve real problems. This lesson masters the three
streams (stdin/stdout/stderr), every redirect operator, the pipe |, and
tee for branching output.
🎯 In this lesson:
✓ stdin (0), stdout (1), stderr (2) — the three streams
✓ Redirects
✓ The pipe | and process substitution ()
✓ tee — write to file AND stdout
✓ /dev/null, /dev/zero, /dev/urandom
✓ xargs — turning stdin into arguments
✓ Real-world pipelines (the senior engineer's daily glue)
⏱ Chapters:
00:00 — The three streams
01:00 — and (overwrite vs append)
01:30 — 2 and 2&1 (stderr handling)
02:00 — The pipe |
03:00 — tee + process substitution
03:30 — /dev/null, /dev/zero
04:00 — xargs essentials
05:30 — Pipeline patterns
🔗 I/O cheat sheet: https://dargslan.com
◀ Previous: L03 — Processes
▶ Next: L05 — Packages
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