Grep expressions c

I am facing problem with getting regular expression for grep for these patterns:-

1).what words c开发者_Python百科ontain but do not begin with the string 'ps'.

2)What option has a description with the words "hide entries". (next line that contains some text after specified word.

I googled but didnt find it. Any suggestions will be appreciated. Thanks

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1. As grep deals with lines, you must process the source to have each word on its own line, then grep. If efficiency is not a question you can grep "ps" and pipe it to grep -v "^ps".

2. I don't understand about hiding the entries. Can you provide an example of what you need from this option?

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You could also use grep -P '^(?!ps)'.