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CentOS 7.0 - man page for unshare (centos section 1)

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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  explicitly 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.ker-
       nel.org/pub/linux/utils/util-linux/.

util-linux				   January 2013 			       UNSHARE(1)
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