1lxc-execute(1) lxc-execute(1)
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6 lxc-execute - run an application inside a container.
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9 lxc-execute {-n name} [-d] [-f config_file] [-s KEY=VAL] [-u, --uid
10 uid] [-g, --gid gid] [-- command]
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13 lxc-execute runs the specified command inside the container specified
14 by name.
15 It will setup the container according to the configuration previously
17 defined with the lxc-create command or with the configuration file pa‐
18 rameter. If no configuration is defined, the default isolation is
19 used.
20 This command is mainly used when you want to quickly launch an applica‐
22 tion in an isolated environment.
23 lxc-execute command will run the specified command into the container
25 via an intermediate process, lxc-init. This lxc-init after launching
26 the specified command, will wait for its end and all other reparented
27 processes. (to support daemons in the container). In other words, in
28 the container, lxc-init has the pid 1 and the first process of the ap‐
29 plication has the pid 2.
30 The above lxc-init is designed to forward received signals to the
32 started command.
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35 -f, --rcfile config_file
36 Specify the configuration file to configure the virtualization
37 and isolation functionalities for the container.
38 This configuration file if present will be used even if there is
40 already a configuration file present in the previously created
41 container (via lxc-create).
42 -s, --define KEY=VAL
44 Assign value VAL to configuration variable KEY. This overrides
45 any assignment done in config_file.
46 -d, --daemon
48 Run the container as a daemon. As the container has no more tty,
49 if an error occurs nothing will be displayed, the log file can
50 be used to check the error.
51 --u, --uid uid
53 Executes the command with user ID uid inside the container.
54 --g, --gid gid
56 Executes the command with group ID gid inside the container.
57 -- Signal the end of options and disables further option process‐
59 ing. Any arguments after the -- are treated as arguments to com‐
60 mand.
61 This option is useful when you want specify options to command
63 and don't want lxc-execute to interpret them.
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66 These options are common to most of lxc commands.
67 -?, -h, --help
69 Print a longer usage message than normal.
70 --usage
72 Give the usage message
73 -q, --quiet
75 mute on
76 -P, --lxcpath=PATH
78 Use an alternate container path. The default is /var/lib/lxc.
79 -o, --logfile=FILE
81 Output to an alternate log FILE. The default is no log.
82 -l, --logpriority=LEVEL
84 Set log priority to LEVEL. The default log priority is ERROR.
85 Possible values are : FATAL, ALERT, CRIT, WARN, ERROR, NOTICE,
86 INFO, DEBUG, TRACE.
87 Note that this option is setting the priority of the events log
89 in the alternate log file. It do not have effect on the ERROR
90 events log on stderr.
91 -n, --name=NAME
93 Use container identifier NAME. The container identifier format
94 is an alphanumeric string.
95 --rcfile=FILE
97 Specify the configuration file to configure the virtualization
98 and isolation functionalities for the container.
99 This configuration file if present will be used even if there is
101 already a configuration file present in the previously created
102 container (via lxc-create).
103 --version
105 Show the version number.
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108 The container is busy
109 The specified container is already running an application. You
110 should stop it before reuse this container or create a new one.
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113 lxc(7), lxc-create(1), lxc-copy(1), lxc-destroy(1), lxc-start(1), lxc-
114 stop(1), lxc-execute(1), lxc-console(1), lxc-monitor(1), lxc-wait(1),
115 lxc-cgroup(1), lxc-ls(1), lxc-info(1), lxc-freeze(1), lxc-unfreeze(1),
116 lxc-attach(1), lxc.conf(5)
117
119 Daniel Lezcano <daniel.lezcano@free.fr>
120 2021-09-18 lxc-execute(1)