December 1999
Beginner
528 pages
11h 10m
English
Content preview from Linux and Unix Shell Programming
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1.8. umask
When you initially log in to the system a command called umask sets your default file creation mode. This command is actually the opposite of the chmod command! Your system administrator should have set this to a reasonable value so when you create files users who are not members of your group will not be able to write to them.
When you are in the shell you can use umask to alter the creation mode of files to your personal preference. This change is effective until you either log out or manually issue another umask command.
Generally, the umask is set in the /etc/profile file, which is the file everybody gets, so if you want to change the umask for everyone put an entry in that file. If you want to set it permanently for your own ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.