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.
swapoff
swapoff [options] [devicelist]
System administration command. Stop making devices and files
specified in devicelist available for swapping and paging.
Option
-a Consult /etc/fstab for devices marked sw. Use those in place of
the device argument.
-h Print help message and then exit.
-V Display version number and then exit.
swapon
swapon [options] devices
System administration command. Make the listed devices available
for swapping and paging.
Options
-a Consult /etc/fstab for devices marked sw. Use those in place of
the devices argument.
-e Used with -a. Don’t complain about missing devices.
-h Print help message, then exit.
-p priority
Specify a priority for the swap area. Higher priority areas will
be used up before lower priority areas are used.
-s Print swap usage summaries, then exit.
-V Print version information, then exit.
sync
sync
System administration command. Write filesystem buffers to disk.
sync executes the sync( ) system call. If the system is to be stopped,
sync must be called to ensure filesystem integrity. Note that shut-
down automatically calls sync before shutting down the system.
sync may take several seconds to complete, so the system should be
told to sleep briefly if you are about to manually call halt or
reboot. Note that shutdown is the ...
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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.