Is there a some man-like program (or site/book) that can show me simple examples of common tools usage?
So i can type in terminal
show-example grep and it will output
... For matching multiple characters, use the asterisk. This example selects all words starting with "c" and ending in "h" from the system's dictionary: grep '\<c.*h\>' /usr/share/dict/words caliph cash catch cheesecloth cheetah ...