Which language is the best for using Linux?

Answer 1

Python is cool, because it's default installed ( at least debian based linux, but it seems to me more widely ).
But it's scripting, not compiling, with advantages and disadvantages, so if you want/need more low level languages, those are the most encountered ( it's already difficult to rank languages, but regards of OS isn't too much important: almost all languages are available ) are C, C++ and Java ( I forgot surely some, but other members would complete )...

Accessory, Php is also adapted, but essentially in case of web development ( server side ).

Answer 2

Amongst the languages you have put in the tags, only Python is available easily (it is actually pre-installed in all Linux distributions)