Linux is a multiuser operating system, and you can use command-line tools to switch users. Learn about that and about the superuser, root, in this video.
Linux is a multiuser environment,…which is a concept we're familiar with nowadays…but was a new idea decades ago when Unix came on the scene.…I can have a user, you can have a user,…and our files are kept separate…in our individual home folders.…We can create files that only one…or another user can access.…At the command line, we can switch between users…with the su command,…which is variously referred to as set user,…switch user, or substitute user.…To use su, we write that command…followed by the name of the user we want to switch to.…
Probably the most common use of switching users…at the command line…is to do some system administration tasks.…There are two basic user roles in Linux.…There's the normal user and the superuser.…The difference here is one of privilege.…The normal user can modify, create, delete,…and move their own files,…but they can't make changes to the system.…They can't install software,…they can't make changes to system files,…and generally speaking,…they can't browse other users' home folders.…
- Recognize what the characters “-h” represent in the statement “df –h/home/alice/Documents”.
- Explain how to recall a previous command in Bash.
- Identify what the command “ls -l” will show.
- Recall what is needed to use the find command to look for files by name, size, and so on.
- List the two modes file permissions can be set to.
- Recall why many command line tools are intended to be used in pipes with other commands.
- Explain what the command “grep -E "" report.txt” will show.
- Identify what the “>” symbol is often used for.
Skill Level Beginner
Learning SQL Server Development on Linuxwith Joey D'Antoni1h 54m Intermediate
What you should know1m 51s
1. Setting Up Your Environment
2. Command-Line Basics
3. Files, Folders, and Permissions
4. Common Command-Line Tasks and Tools
5. A Peek at Some More Advanced Topics
Next steps1m 28s
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