Linux Today: Linux News On Internet Time.
Search Linux Today
Linux News Sections:  Developer -  High Performance -  Infrastructure -  IT Management -  Security -  Storage -
Linux Today Navigation
LT Home
Contribute
Contribute
Link to Us
Linux Jobs


More on LinuxToday


Linux.com: CLI for Noobies: Mother, May I?

Jan 27, 2004, 08:00 (0 Talkback[s])
(Other stories by Joe Barr)

"There are few things as confusing, frustrating, and aggravating for those who come to Linux from Windows as the whole notion of permissions. Based on my own personal experience, I would say as much as 25% of the problems I've had using Linux over the years have been permissions related. It's a subject your mother didn't teach you, and you didn't learn on the playgrounds. That's why we're going to get down and dirty with the CLI today: to learn about permissions on Linux, right here, right now.

"Permissions are flags which control who can do what with a file. Which file? Any file on your system. For each file, there are three separate flags which indicate whether or not you can read a file, write a file, or execute a file. Just because you can do one, doesn't mean you can do the other two.

"Permissions are necessary for security. Because Linux is truly a multiuser system, it needs to protect each user's data from all the other users..."

Complete Story

Related Stories: