NAME

       lxc-execute - run an application inside a container.

SYNOPSIS

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

DESCRIPTION

       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 used.

       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.  (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.

OPTIONS

       -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.

       -d, --daemon
              Run the container as a daemon. As the container has no more tty, if an error occurs
              nothing will be displayed, the log file can be used to check the error.

       --     Signal the end of options and disables further  option  processing.  Any  arguments
              after the -- are treated as arguments to command.

              This  option is useful when you want specify options to command and don't want lxc-
              execute to interpret them.

COMMON OPTIONS

       These options are common to most of lxc commands.

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

       --usage
              Give the usage message

       -q, --quiet
              mute on

       -P, --lxcpath=PATH
              Use an alternate container path. The default is /var/lib/lxc.

       -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, DEBUG.

              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.

       --rcfile=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).

       --version
              Show the version number.

DIAGNOSTIC

       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.

SEE ALSO

       lxc(7),  lxc-create(1),  lxc-copy(1),  lxc-destroy(1),  lxc-start(1),  lxc-stop(1),   lxc-
       execute(1),  lxc-console(1),  lxc-monitor(1),  lxc-wait(1), lxc-cgroup(1), lxc-ls(1), lxc-
       info(1), lxc-freeze(1), lxc-unfreeze(1), lxc-attach(1), lxc.conf(5)

AUTHOR

       Daniel Lezcano <daniel.lezcano@free.fr>

                                            2023-05-05                             lxc-execute(1)