Minutes a program runs.

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LEARN ABOUT DEBIAN

unshare

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),

       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).

       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.

NOTES

       The unshare command drops potential privileges before executing the target program. This allows to setuid unshare.

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							   October 2008 							UNSHARE(1)

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