unshare(1) - Linux man page
Name
unshare - run program with some namespaces unshared from parent
Synopsis
unshare [options] program [arguments]
Description
Unshares specified namespaces from parent process and then executes specified program. Unshareable
namespaces are:
- mount namespace
- mounting and unmounting filesystems will not affect rest of the system (CLONE_NEWNS flag),
- UTS namespace
- setting hostname, domainname will not affect rest of the system (CLONE_NEWUTS flag),
- IPC namespace
- process will have indpendent namespace for System V message queues, semaphore sets and shared memory segments (CLONE_NEWIPC flag),
- network namespace
- process will have independent IPv4 and IPv6 stacks, IP routing tables, firewall rules, the /proc/net and /sys/class/net directory trees,
sockets etc. (CLONE_NEWNET flag).
- See the clone(2) for exact semantics of the flags.
Options
- -h, --help
- Print a help message,
- -m, --mount
- Unshare the mount namespace,
- -u, --uts
- Unshare the UTC namespace,
- -i, --ipc
- Unshare the IPC namespace,
- -n, --net
- Unshare the network namespace.
See Also
unshare(2), clone(2)
Bugs
None known so far.
Author
Mikhail Gusarov <dottedmag@dottedmag.net>
Availability
The unshare command is part of the util-linux-ng package and is available from
ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.