August 2000
Intermediate to advanced
816 pages
29h 45m
English
book
Linux in a Nutshell, Third Edition
by Ellen Siever, Stephen Spainhour, Jessica P. Hekman, Stephen Figgins
Content preview from Linux in a Nutshell, Third EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Name
grpck
Synopsis
grpck [option] [files]
Description
System administration command. Remove corrupt or duplicate entries in the /etc/group and /etc/gshadow files. Generate warnings for other errors found. grpck will prompt for a “yes” or “no” before deleting entries. If the user replies “no,” the program will exit. If run in a noninteractive mode, the reply to all prompts is “no.” Alternate group and gshadow files can be checked. If other errors are found, the user will be encouraged to run the groupmod command.
Option
- -n
Noninteractive mode.
Exit codes
- 0
Success.
- 1
Syntax error.
- 2
One or more bad group entries found.
- 3
Could not open group files.
- 4
Could not lock group files.
- 5
Could not write group files.
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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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