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.

       NSFS column, printed when net is specified for --type option, is special; it uses multi-line cells.   Use
       the option --nowrap is for switching 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 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/.