July 2005
Intermediate to advanced
944 pages
158h 24m
English
book
Linux in a Nutshell, Fifth Edition
by Ellen Siever, Aaron Weber, Stephen Figgins, Robert Love, Arnold Robbins
Content preview from Linux in a Nutshell, Fifth Edition
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Chapter 3: Linux Commands
This is the Title of the Book, eMatter Edition
Copyright © 2006 O’Reilly & Associates, Inc. All rights reserved.
signal
Send a signal to the running process.
step
Execute the next source line, stepping into a function if
necessary.
undisplay
Reverse the effect of the display command; keep expressions
from being displayed.
until
Finish the current loop.
up Move up one stack frame to make another function the
current one.
watch
Set a watchpoint (i.e., a data breakpoint) in the program.
whatis
Print the type of a variable or function.
getent
getent [options] database key
Search the specified database for the specified key. The database
may be any one of passwd, group, hosts, services, protocols, or
networks.
Options
-s, --service=CONFIG
Specify the service configuration to be used. See nsswitch.
conf(5) for information about name-service switching.
-?, --help
Display a help message.
--usage
Display a very short syntax synopsis.
-V, --version
Print version information and quit.
getkeycodes
getkeycodes
Print the kernel’s scancode-to-keycode mapping table.
gpasswd
gpasswd [options] group
Change group password. May only be used by an administrator.
Uses the encryption algorithm from the GROUP_CRYPT environ-
ment variable, falling back to the CRYPT variable set in /etc/default/
passwd. If neither of those is set, DES is used.
Options
-a Add a new group.
-d Delete a group.
-M Create members of the group. ...
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