LSNS
Section: System Administration (8)
Updated: December 2015
Page Index
NAME
lsns - list namespaces
SYNOPSIS
lsns
[options]
[
namespace]
DESCRIPTION
lsns
lists information about all the currently accessible namespaces or about the
given
namespace. The
namespace identifier is an inode number.
The default output is subject to change. So whenever possible, you should
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.
The NSFS column, printed when net is specified for the
--type option, is special; it uses multi-line cells. Use the option
--nowrap to switch to ","-separated single-line representation.
Note that lsns reads information directly from the /proc filesystem and
for non-root users it may return incomplete information. The current /proc
filesystem may be unshared and affected by a PID namespace
(see unshare --mount-proc for more details).
lsns
is not able to see persistent namespaces without processes where the namespace
instance is held by a bind mount to /proc/pid/ns/type.
OPTIONS
- -J, --json
-
Use JSON output format.
- -l, --list
-
Use list 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.
The default list of columns may be extended if list is
specified in the format +list (e.g., lsns -o +PATH).
- --output-all
-
Output all available columns.
- -p, --task pid
-
Display only the namespaces held by the process with this pid.
- -r, --raw
-
Use the raw output format.
- -t, --type type
-
Display the specified type of namespaces only. The supported types are
mnt, net, ipc, user, pid, uts,
cgroup and time. This option may be given more than once.
- -u, --notruncate
-
Do not truncate text in columns.
- -W, --nowrap
-
Do not use multi-line text in columns.
- -V, --version
-
Display version information and exit.
- -h, --help
-
Display help text and exit.
AUTHORS
Karel Zak <kzak@redhat.com>
SEE ALSO
nsenter(1),
unshare(1),
clone(2),
namespaces(7)
AVAILABILITY
The lsns command is part of the util-linux package and is available from
https://www.kernel.org/pub/linux/utils/util-linux/.