Now I'm on the oh-my-zsh, but I'm not sure that it is perfect choice. What is the key difference between grml zsh config (github repo) and oh-my-zsh config? In which case should I prefer grml or oh-my-zsh?
I am unable to give a detailed report of their differences but I can at least give a broad overview that may help to answer some basic questions and lead you to places where you can learn more.
Basically, the most apparent differences between the two are oh-my-zsh's plugin/theme system and auto-updater. However, these features can be added to grml-zsh with the use of antigen, which is a plugin manager for zsh inspired by oh-my-zsh.
Antigen allows you to define which plugins and theme you wish to use and then downloads and includes them for you automatically. Ironically, though, most of the plugins and themes are pulled from oh-my-zsh's library which means in order for them to work antigen must first load the oh-my-zsh core. So, that approach leads to more or less recreating oh-my-zsh in a roundabout way. However, if you prefer grml's configuration to oh-my-zsh's then this is a valid option.
Bottom line, I believe you just need to try both and see which one works best for you. You can switch back and forth by creating the following files:
Then if you want to use oh-my-zsh:
Or, if you want to use grml:
If you don't want to duplicate your customizations (meaning adding files to the custom directory for oh-my-zsh and modifying the pre and local files for grml), one option is to add your customizations to
Also, if you decide to use antigen you can add it to your