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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)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | AUTHORS | SEE ALSO | AVAILABILITY