1LSNS(8)                      System Administration                     LSNS(8)
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NAME

6       lsns - list namespaces
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SYNOPSIS

9       lsns [options] namespace
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DESCRIPTION

12       lsns lists information about all the currently accessible namespaces or
13       about the given namespace. The namespace identifier is an inode number.
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15       The default output is subject to change. So whenever possible, you
16       should avoid using default outputs in your scripts. Always explicitly
17       define expected columns by using the --output option together with a
18       columns list in environments where a stable output is required.
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20       The NSFS column, printed when net is specified for the --type option,
21       is special; it uses multi-line cells. Use the option --nowrap to switch
22       to ","-separated single-line representation.
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24       Note that lsns reads information directly from the /proc filesystem and
25       for non-root users it may return incomplete information. The current
26       /proc filesystem may be unshared and affected by a PID namespace (see
27       unshare --mount-proc for more details). lsns is not able to see
28       persistent namespaces without processes where the namespace instance is
29       held by a bind mount to /proc/pid/ns/type.
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OPTIONS

32       -J, --json
33           Use JSON output format.
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35       -l, --list
36           Use list output format.
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38       -n, --noheadings
39           Do not print a header line.
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41       -o, --output list
42           Specify which output columns to print. Use --help to get a list of
43           all supported columns.
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45           The default list of columns may be extended if list is specified in
46           the format +list (e.g., lsns -o +PATH).
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48       --output-all
49           Output all available columns.
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51       -p, --task PID
52           Display only the namespaces held by the process with this PID.
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54       -r, --raw
55           Use the raw output format.
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57       -t, --type type
58           Display the specified type of namespaces only. The supported types
59           are mnt, net, ipc, user, pid, uts, cgroup and time. This option may
60           be given more than once.
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62       -u, --notruncate
63           Do not truncate text in columns.
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65       -W, --nowrap
66           Do not use multi-line text in columns.
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68       -V, --version
69           Display version information and exit.
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71       -h, --help
72           Display help text and exit.
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AUTHORS

75       Karel Zak <kzak@redhat.com>
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SEE ALSO

78       nsenter(1), unshare(1), clone(2), namespaces(7), ioctl_ns(2)
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REPORTING BUGS

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

85       The lsns command is part of the util-linux package which can be
86       downloaded from Linux Kernel Archive
87       <https://www.kernel.org/pub/linux/utils/util-linux/>.
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91util-linux 2.37.2                 2021-08-16                           LSNS(8)
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