UNSHARE(1)							   User Commands							UNSHARE(1)

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), except for filesystems which are explic-
	      itly marked as shared (by mount --make-shared). See /proc/self/mountinfo for the shared flags.

       UTS namespace
	      setting hostname, domainname will not affect rest of the system (CLONE_NEWUTS flag).

       IPC namespace
	      process will have independent 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).

       pid namespace
	      children will have a distinct set of pid to process mappings than their parent.  (CLONE_NEWPID 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 UTS namespace,

       -i, --ipc
	      Unshare the IPC namespace,

       -n, --net
	      Unshare the network namespace.

       -p, --pid
	      Unshare the pid 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 package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.

util-linux							   January 2013 							UNSHARE(1)