Man Linux: Main Page and Category List


       lxc-execute - run an application inside a container.


       lxc-execute -n name [-f config_file] [-s KEY=VAL ] command


       lxc-execute  runs  the specified command inside the container specified
       by name.

       It will setup the container according to the  configuration  previously
       defined  with  the  lxc-create  command  or with the configuration file
       parameter.  If no configuration is defined, the  default  isolation  is

       This  command  is  mainly  used  when  you  want  to  quickly launch an
       application in an isolated environment.

       lxc-execute command will run the specified command into  the  container
       via  an  intermediate process, lxc-init.  This lxc-init after launching
       the specified command, will wait for its end and all  other  reparented
       processes.   (that  allows  to  support  daemons in the container).  In
       other words, in the container, lxc-init has the pid  1  and  the  first
       process of the application has the pid 2.

       The  above  lxc-init  is  designed  to  forward received signals to the
       started command.  So lxc-kill (1) sent signal is received by  the  user
       specified command (pid 2 in the container).


          -f, --rcfile config_file
              Specify  the  configuration file to configure the virtualization
              and isolation functionalities for the container.

              This configuration file if present will be used even if there is
              already  a  configuration file present in the previously created
              container (via lxc-create).

          -s, --define KEY=VAL
              Assign value VAL to configuration variable KEY.  This  overrides
              any assignment done in config_file.


       These options are common to most of lxc commands.

       -?, -h, --help
              Print a longer usage message than normal.

              Give the usage message

       -q, --quiet
              mute on

       -o, --logfile=FILE
              Output to an alternate log FILE. The default is no log.

       -l, --logpriority=LEVEL
              Set  log  priority  to LEVEL. The default log priority is ERROR.
              Possible values are : FATAL, CRIT, WARN,  ERROR,  NOTICE,  INFO,

              Note  that this option is setting the priority of the events log
              in the alternate log file. It do not have effect  on  the  ERROR
              events log on stderr.

       -n, --name=NAME
              Use  container identifier NAME.  The container identifier format
              is an alphanumeric string.


       The container is busy
              The specified container is already running an  application.  You
              should  stop it before reuse this container or create a new one.


       lxc(1), lxc-create(1), lxc-destroy(1), lxc-start(1), lxc-stop(1),  lxc-
       execute(1),  lxc-kill(1),  lxc-console(1), lxc-monitor(1), lxc-wait(1),
       lxc-cgroup(1), lxc-ls(1), lxc-ps(1), lxc-info(1),  lxc-freeze(1),  lxc-
       unfreeze(1), lxc.conf(5)


       Daniel Lezcano <>

                                 26 July 2010