This question is somewhat similar to this: Unix/Linux command syntax Suppose I have a program foo that takes arguments -a and -b. If both a and b take a string argument what is the meaning of this ...
grepping, awking, sedding, and piping are day-to-day routine of a user of any Unix-like operating system, may it be on the command line or inside a shell script (collectively called filters from now ...
I'm developing an application which I'd like to follow the "Unix way." What should I program it to do in case it is called with no arguments (which makes no practical sense): display an error ...
Under some answers, I see comments that recommend avoiding shell specific commands in answers. How do I know which commands, operators, etc exist in all shells? Is there a list of standards? man ...
I can see that uppercase letter means default here. Is there a standard for this? I'd like to read the full standards.
I was wondering how the "GUI" of a command line application is communicated over a network. Most of the time, it's quite simple (plain text / input) but sometimes it's more complex (aptitude). Is it ...