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Linux for Starters: Your Guide to Linux – Linux Commands – Appendix

Last Updated on April 21, 2023

Commands: S-U
screenKeep a session open on a remote server. Manage multiple windows
sdiffCompare the differences between and optionally merge 2 files
seqOutput a sequence of numbers to stdout
shutdownShutdown and reboot the system
sleepDelay for a specified amount of time.
sortSort lines of text files
splitSplit a file into pieces
suSwitch shell to another user
sumCompute checksums and the number of blocks for a file
syncFlushes all pending write operations to the appropriate disks
tacPrint and concatenate files in reverse (last line first)
tailDisplay the last part of a file
tarArchiving utility which is often combined with a compression tool e.g gzip or bzip2
teeRead from standard input and write to standard output and files (or commands)
testCheck file types and compare values
timeSee how long a command takes
touchChange a file access and modification times (atime, mtime)
topDisplay dynamic real-time information about running processes
traceroutePrint the route packets trace to network host
trTranslate characters: run replacements based on single characters / character sets
tsortPerform a topological sort
umountUnlink a filesystem from its mount point, making it no longer accessible
unexpandConvert spaces to tabs
uniqOutput the unique lines from the given input or file
unitsProvide the conversion between two units of measure.
useraddCreate a new user
usermodModifies a user account
usersDisplay a list of logged in users

Pages in this article:
Page 1 – Commands: A-D
Page 2 – Commands: E-H
Page 3 – Commands: I-M
Page 4 – Commands: N-R
Page 5 – Commands: S-U
Page 6 – Commands: V-Z


All articles in this series:

Linux For Starters: Your Guide to Linux
1What is Linux? Why use Linux? What do I need?
2Choose a Linux distribution meeting your specific needs and requirements.
3Make a bootable Ubuntu USB stick in Windows.
4We show you how to install Ubuntu 21.04 on your hard disk.
5Things to do after installing Ubuntu.
6Navigating your way around the Desktop.
7Updating the system, install new software.
8Open source replacements for proprietary Windows desktop software.
9Get started with the power and flexibility of the terminal.
10We cover the basics of files and permissions.
11Getting help from your system.
12Learn all about the file system.
13Manipulating files from the shell.
14Maintain your system with these simple tips.
15Managing users on your system.
16Explore different desktops to GNOME 3.
17Gaming on Linux.
18Protect your privacy with this guide.
19Access the Windows desktop from Linux using a remote desktop client.
20Set up a virtual machine running Ubuntu as the host and openSUSE as the guest.
21Wine lets you run Windows programs on Linux without emulation.
22Extend your GNOME desktop with extensions and themes.
XUseful Linux commands.
Best Free and Open Source SoftwareRead our complete collection of recommended free and open source software. Our curated compilation covers all categories of software.

The software collection forms part of our series of informative articles for Linux enthusiasts. There are hundreds of in-depth reviews, open source alternatives to proprietary software from large corporations like Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk.

There are also fun things to try, hardware, free programming books and tutorials, and much more.
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