exec¶
ddev-live exec runs a command or script in the site's environment.
Commands and scripts can be defined directly in the invocation or stored in a file for repeatability and consistency. By default, this command will wait until all constituent commands are complete, then return the combined stdout and stderr output, along with other execution information.
You can use the --async flag with ddev-live exec if you prefer not waiting for the output to be returned.
exec inline command¶
The following command illustrates calling drush version in the mysite site for the ddev-demo organization.
$ ddev-live exec mysite -- "drush version"
Targeting site: ddev-demo/mysite
Running command:
drush version
Created exec: ddev-demo/mysite-v9vp8
OUTPUT
Drush version : 9.7.1
Once a job has been created you can check the status at any time with
ddev-live describe.$ ddev-live describe exec ddev-demo/mysite-v9vp8
Name: mysite-v9vp8
Org: ddev-demo
Created: 3m ago (2020-04-30 14:17:01 -0400 EDT)
Status: Completed
Duration:
Exit Code:
COMMAND
drush version
OUTPUT
Drush version : 9.7.1
exec local script¶
The following command executes a local script named wp-version.sh which contains the command wp --version against the remote mysite site for the ddev-demo organization.
$ ddev-live exec mysite --file wp-version.sh
Targeting site: ddev-demo/mysite
Running command:
wp --version
Created exec: ddev-demo/mysite-vsjsx
OUTPUT
WP-CLI 2.4.0
exec shell¶
Any command or script passed to exec will be interpreted by "sh", meaning a user can utilize environment variables, wildcards, and the like when running commands. If the commands used in an exec rely on these features of "sh", the commands should be defined in a file to prevent shell parsing and substitution locally. For example, the following command will echo the value of the variables as defined on the local system, not the site's remote environment:
$ ddev-live exec mysite -- echo $HOME
Targeting site: ddev-demo/mysite
Running command:
echo /home/local-ddev-demo
Created exec: ddev-demo/mysite-xcpln
OUTPUT
/home/local-ddev-demo
To avoid this, create a file containing the commands:
#! /bin/sh
echo $HOME
...and reference the file in the exec command:
$ ddev-live exec mysite --file home.sh
Targeting site: ddev-demo/mysite
Running command:
#! /bin/sh
echo $HOME
Created exec: ddev-demo/mysite-gxxcf
OUTPUT
/tekton/home
Cancel an exec¶
After an exec has been created and scheduled (but before it has been executed),
it can be cancelled:
$ ddev-live exec cancel ddev-demo/mysite-gdk6x
Cancelled exec ddev-demo/mysite-gdk6x