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Linux Shell Scripting Essentials
book

Linux Shell Scripting Essentials

by Sinny Kumari
November 2015
Beginner content levelBeginner
282 pages
5h 5m
English
Packt Publishing
Content preview from Linux Shell Scripting Essentials

Permission and ownership

As a user of a system, to access a file in Linux and UNIX, it is important that a user has the required permission for that specific file or directory. For example, as a regular user, perform cd into /root:

$ cd /root
bash: cd: /root/: Permission denied

We were not able to do so because of the permission denied error:

$ cd ~/

We were successfully able to do cd into the user's home directory because a user had the permission to access its own home directory.

Every file in UNIX or Linux has an owner and an associated group. It also has a set of permissions (read, write, and execute) with respect to the user, group, and others.

Viewing the ownership and permission of files

The ls command with the -l option is used to view the ...

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Publisher Resources

ISBN: 9781785284441Supplemental Content