In this episode of Linux Crash Course, we'll go over data streams. Specifically, Standard Output (stdout), Standard Input (stdin), and Standard Error (stderr). We'll also take a look at how to redirect specific data streams, so you can easily separate errors from output. Check out the LLTV Shop! Shirts, bags, cups and much more! ➜ https://merch.learnlinux.tv/ Support the Channel Show your support for Learn Linux TV and get access to exclusive perks! • Become a Channel Member ➜ https://learnlinux.link/member • Become a Patron ➜ https://learnlinux.link/patron Official Stores and Merchandise • Linux Merch ➜ https://merch.learnlinux.tv/ • Latest book: Mastering Ubuntu Server ➜ https://ubuntuserverbook.com/ • Linux stuff from Amazon ➜ https://learnlinux.link/amazon • Awesome Pi-powered KVM ➜ https://learnlinux.link/tinypilot • 5% discount on LPI exam vouchers ➜ https://learnlinux.link/lpi-voucher Note: Royalties and/or commission is earned from each of the above links Time Codes 00:00 - Intro 00:41 - Quick note regarding input/output 01:17 - The three data streams (standard input, standard output, and standard error) 03:06 - Example of Standard Error (stderr) 03:47 - Using the echo command to find the return code 05:54 - Example of both standard output and standard error from one command 07:47 - Splitting standard output and standard error 09:06 - Number designations for stdin, stdout, and stderr 10:24 - Sending stdout and stderr to different files Full Courses from Learn Linux TV • Linux Crash Course series ➜ https://linux.video/cc • Learn how to use tmux ➜ https://linux.video/tmux • Learn how to use vim ➜ https://linux.video/vim • Bash Scripting Series ➜ https://linux.video/bash • Proxmox VE Cluster Full Course ➜ https://linux.video/pve • Learn Ansible ➜ https://linux.video/ansible Boost your Linux skills with these stand-alone tutorials • Essential tweaks for ALL Linux Servers ➜ https://linux.video/all-servers • Install Arch Linux ➜ https://linux.video/arch-guide • Use Ventoy to create a multi-distro flash drive ➜ https://linux.video/ventoy • Browse the web from within your Linux terminal ➜ https://linux.video/term-web • From Zero to Proxmox ➜ https://linux.video/zero-to-pve • Check out Neovim ➜ https://linux.video/neovim • Systemd Deep Dive ➜ https://linux.video/systemd • Systemd Timers ➜ https://www.youtube.com/watch?v=n6BuUgkZ5T0 • Installing an operating system for Raspberry Pi ➜ https://linux.video/pi-imager • Connecting to a Linux server via ssh ➜ https://linux.video/ssh • Linux permissions ➜ https://linux.video/perms • OpenSSH Guide ➜ https://linux.video/ssh-guide • 10 Linux Terminal Tips and Tricks ➜ https://linux.video/cli-tricks-1 • Over 15 Terminal Tricks ➜ https://linux.video/cli-tricks-2 Linux-related Podcasts • Enterprise Linux Security ➜ https://enterpriselinuxsecurity.show/ • The Homelab Show ➜ https://thehomelab.show/ Learn Linux TV on the Web • Main site ➜ https://www.learnlinux.tv/ • Community ➜ https://community.learnlinux.tv/ • Enterprise Linux Security Podcast ➜ https://enterpriselinuxsecurity.show/ • The Homelab Show Podcast ➜ https://thehomelab.show/ • Content Ethics ➜ https://www.learnlinux.tv/content-ethics • Request Assistance ➜ https://www.learnlinux.tv/request-assistance Disclaimer Learn Linux TV provides technical content that will hopefully be helpful to you and teach you something new. However, this content is provided without any warranty (expressed or implied). Learn Linux TV is not responsible for any damages that may arise from any use of this content. The person viewing Learn Linux TV's content is expected to follow their best judgement and to make their best decisions while working with any related technology. Always make sure you have written permission before working with any infrastructure. Also, be sure that you're compliant with all company rules, change control procedures, and local laws.