lsns
LSNS(8) System Administration LSNS(8)
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 num-
ber.
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.
NSFS column, printed when net is specified for --type option, is spe-
cial; it uses multi-line cells. Use the option --nowrap is for switch-
ing 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 per-
sistent 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 and cgroup. 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/.
util-linux December 2015 LSNS(8)
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