I'm after a linux server-side script I can run which can complete several tasks.
We currently have an in-house PHP framework - which runs on Apache with MySQL - the only server-side 'technology' we use is composer.
I am after a task runner - similar to grunt & gulp which does not run on Node and can work with an existing site set up - something that can be plugged in after the site is set up.
The thing that puts me off gulp and grunt is it suits your application if it is built on Node or you are using other node apps - otherwise you need a package.js along with a Gruntfile.
Tasks I would like it to run as a minimum is compiling Scss and minifying JS. Other tasks would be JS concatenation and image compression.
I've looked at Grunt, Gulp, Guard and Brunch.
Any suggestions?
uglifyjs will minify javascript, and other tools like compass can compile scss.
You can use make as a task runner to manage all that.
The default choice of Make, because of extremely widespread usage and software freedom, is to use GNU Make, which has a comprehensive manual.
One of the very important and useful operation that you can do using Grunt is running shell command, now it can be sequentially or in parallel.
Have a look at the grunt-shell, using this you can run any sort of complex shell command.
You can run also bower to install all your dependencies directly into your assets so that you don't have to download them one by one. There are whole lot of plugins available you can just look at them here