unshare

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 direc‐
              tory 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 

AVAILABILITY
       The unshare command is part of the util-linux-ng package and is  avail‐
       able from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.



Linux                            OCTOBER 2008                       UNSHARE(1)