Command combination for displaying header and content


 
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Homework and Emergencies Homework & Coursework Questions Command combination for displaying header and content
# 8  
Old 08-26-2014
True enough. man pages are your friend. As stated previously, might as well start at the start.
Code:
man man

. You can scroll with the up and down arrows on your keyboard.

For instance, I have two terminal windows open as I experiment with your problem. One I'm using for a man page, so I can look at it frequently and easily. The other I'm issuing commands in, to replicate the problem and experiment with finding a solution.

Sometimes man pages are a bit confusing to look at, or not "entirely" helpful from a new user's perspective. It depends on the command you are looking up, really. You found a good place here, as people want to help.

For instance,
Code:
man grep

has examples of usage at the bottom, one of which is how to find lines in a file (named "myfile") that do NOT contain the words "foo" and "bar".
Check out the examples and scroll back up in the man page to see which grep options in those examples do what.

You could with some study of the man page for grep, figure out how to find lines that DO contain the words "foo" and "bar".

When using any search tools, try to be as general as possible to start, and refine as needed after seeing the results.

In your example text, evaluate what is a unique value for each of the lines you want returned.
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