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UNSHARE
Section: User Manuals (1) Updated: OCTOBER 2008 Index
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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.
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-ng package and is available from
ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- OPTIONS
-
- NOTES
-
- SEE ALSO
-
- BUGS
-
- AUTHOR
-
- AVAILABILITY
-
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