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

-l, --list

-n, --noheadings

-o, --output list

--output-all

-p, --task PID

-r, --raw

-t, --type type

-u, --notruncate

-W, --nowrap

-V, --version

-h, --help

AUTHORS¶

Karel Zak <kzak@redhat.com>

SEE ALSO¶

nsenter(1), unshare(1), clone(2), namespaces(7), ioctl_ns(2)

REPORTING BUGS¶

For bug reports, use the issue tracker at <https://github.com/karelzak/util-linux/issues>.

AVAILABILITY¶

The lsns command is part of the util-linux package which can be downloaded from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils/util-linux/>.