Difference between revisions of "Execute once / always"

Revision as of 12:45, 8 November 2007

Sometimes, you may want to execute a program or a script each time WPKG runs (for example, to clean up a temp directory, synchronize time etc.).

To do this, use execute="always".

Another approach is when you want to execute a program or a script only once (for example, you want to remove a directory, set up permissions, or you're unable to produce any file or registry check).

To do this, use execute="once".

Below, an example for execute="always":

    <package
        id="time"
        name="Time Synchonization"
        revision="1"
        execute="always">
        <install cmd="net time \\timeserver /set /yes" />
    </package>

Notes

• if you use execute once / always, then put your installation instructions as "<install cmd...", not as "<upgrade cmd...".
• similarly, on revision upgrades, "<install cmd..." is used, not "<upgrade cmd..."
• all checks are ignored with execute once / always