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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | AUTHOR | SEE ALSO | AVAILABILITY | COLOPHON |
LSMEM(1) User Commands LSMEM(1)
lsmem - list the ranges of available memory with their online status
lsmem [options]
The lsmem command lists the ranges of available memory with their
online status. The listed memory blocks correspond to the memory
block representation in sysfs. The command also shows the memory
block size and the amount of memory in online and offline state.
The default output compatible with original implementaion from
s390-tools, but it's strongly recommended to avoid using default
outputs in your scripts. Always explicitly define expected columns
by using the --output option together with a columns list in
environments where a stable output is required.
Not all columns are supported on all systems. If an unsupported
column is specified, lsmem prints the column but does not provide any
data for it.
Use the --help option to see the columns description.
-a, --all
List each individual memory block, instead of combining memory
blocks with similar attributes.
-b, --bytes
Print the SIZE column in bytes rather than in a human-readable
format.
-h, --help
Display help text and exit.
-J, --json
Use JSON output format.
-n, --noheadings
Do not print a header line.
-o, --output list
Specify which output columns to print. Use --help to get a
list of all supported columns.
-P, --pairs
Produce output in the form of key="value" pairs. All
potentially unsafe characters are hex-escaped (\x<code>). The
default list of columns may be extended if list is specified
in the format +list (e.g. lsmem -o +NODE).
-r, --raw
Produce output in raw format. All potentially unsafe
characters are hex-escaped (\x<code>).
-s, --sysroot directory
Gather memory data for a Linux instance other than the
instance from which the lsmem command is issued. The
specified directory is the system root of the Linux instance
to be inspected.
-V, --version
Display version information and exit.
--summary[=when]
This option controls summary lines output. The optional
argument when can be never, always or only. If the when
argument is omitted, it defaults to "only". The summary output
is suppresed for --raw, --pairs and --json.
lsmem was originally written by Gerald Schaefer for s390-tools in
Perl. The C version for util-linux was written by Clemens von Mann,
Heiko Carstens and Karel Zak.
chmem(8)
The lsmem command is part of the util-linux package and is available
from Linux Kernel Archive
⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩.
This page is part of the util-linux (a random collection of Linux
utilities) project. Information about the project can be found at
⟨https://www.kernel.org/pub/linux/utils/util-linux/⟩. If you have a
bug report for this manual page, send it to
util-linux@vger.kernel.org. This page was obtained from the
project's upstream Git repository
⟨git://git.kernel.org/pub/scm/utils/util-linux/util-linux.git⟩ on
2017-07-05. If you discover any rendering problems in this HTML ver‐
sion of the page, or you believe there is a better or more up-to-date
source for the page, or you have corrections or improvements to the
information in this COLOPHON (which is not part of the original man‐
ual page), send a mail to man-pages@man7.org
util-linux October 2016 LSMEM(1)
Pages that refer to this page: chmem(8)