Difference between help, info and man command
I know that these command will help to get syntax and options for commands but my question is that how they differ from each other?
info
How can I tell what version of Linux I’m using?
Often times I will ssh into a new client’s box to make changes to their website configuration without knowing much about the server configuration. I have seen a few ways to get information about the system you’re using, but are there some standard commands to tell me what version of Unix/Linux I’m on and basic system information (like if it is a 64-bit system or not), and that sort of thing?
What is GNU Info for?
I understand what GNU Info is and how to use it, but what is it for? Why does it exist in parallel to the man pages? Why not write detailed man pages rather than provide a separate utility?