UNSHARE(1) User Manuals 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 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/.
Linux OCTOBER 2008 UNSHARE(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),
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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