A Bash script to patch or merge zip archives (or jar files).

Specify the result archive as the first argument.

Then, specify every zip/jar that should be merged together.

Archives specified later replace/overwrite contents from archives specified earlier.

Example:

bash patch-zip.bash modded-game.jar game.jar mod1.zip mod2.zip

Contents from mod2.zip will always appear in modded-game.jar.

Contents from mod1.zip will appear in modded-game.jar if and only if contents with equivalent names do not appear in mod2.zip.

Contents from game.jar will appear in modded-game.jar if and only if contents with equivalent names do not appear in either mod1.zip or mod2.zip.

Place the script somewhere in your PATH. Example:

# Assuming ~/.local/bin is already added to your PATH
cp patch-zip.bash ~/.local/bin/patch-zip
chmod +x ~/.local/bin/patch-zip