Postinstall scripts

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As of late August 2005 ROCK has support for postinstall and postremove scripts. These are scripts that are executed after a package has been installed (as opposed to after the package has been built). This can for example be used to create ssh-keys after the openssh package has been installed and things like that.

Creating Postinstall Script

To create a postinstall script for a package, simply create a file called postinstall.sh in the package directory (for example: rock-src/package/blindcoder/dgamelaunch/postinstall.sh) and it will be copied to the proper location. The usual ROCK Substitutions apply.

Within the script you have the following helper functions available:

  • is_installed() and is_removed()

These functions exlicitly check if a specific file exists (is installed) or does not exist (is removed), respectively.

  • any_installed() and any_removed()

These functions accept a grep pattern as their argument and return true if any files from the postinstall or postremove logs that match this pattern are installed or removed, respectively.

  • all_installed() and all_removed()

These functions also accept a grep pattern and return all files from the postinstall or postremove logs that match this pattern and are installed or removed, respectively.

Examples:

if any_installed ".*\.so"; then
 echo "dynamic libraries installed, run ldconfig!"
fi

if any_removed ".*\.so"; then
 echo "dynamic libraries removed, run ldconfig!"
fi

If any files ending in .so got installed or removed the user will be reminded to run ldconfig.

all_installed ".*" | while read M; do echo "Installed: $M"; done

all_removed ".*" | while read M; do echo "Removed: $M"; done

All installed and all removed files will be listed.

For more examples you can look through the rock-src/package/*/*/postinstall.sh scripts.

Retrieved from "https://www.rocklinux.net/wiki/Postinstall_scripts"
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