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egrep (2b|[^b]{2}) Testfile - I am trying to understand what the expression between the brackets mean?...

egrep (2b|[^b]{2}) Testfile - I am trying to understand what the expression between the brackets mean? I think I would get lines from my test file that either meet the 2b or the [^b]{2} requirement but not sure how to interpret

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Answer #1

Please see the attached screenshot.

shreya--bash-80x24 shreyas-MBP: shreya$ cat > testfile This is 2b testng b is not read 2b or not b shreyas-MBP shreya$ egrep

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