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/.