Usage:
 lsns [options] [<namespace ID>]

List system namespaces.

Options:
 -J, --json             use JSON output format
 -l, --list             use list format output
 -n, --noheadings       don't print headings
 -o, --output <list>    define which output columns to use
     --output-all       output all columns
 -P, --persistent       namespaces without processes
 -p, --task <pid>       print process namespaces
 -Q, --filter <expr>    apply display filter
 -r, --raw              use the raw output format
 -u, --notruncate       don't truncate text in columns
 -W, --nowrap           don't use multi-line representation
 -t, --type <name>      namespace type (mnt, net, ipc, user, pid, uts, cgroup, time)
 -T, --tree[=<rel>]     use tree format (parent, owner, or process)

 -H, --list-columns     list the available columns
 -h, --help             display this help
 -V, --version          display version

For more details see lsns(8).