I've got two files. File A contains text written in N lines, and File B contains a binary pattern string of 0 and 1 that has N length too.
I want to delete the lines from File A that has the same line number that the one on File B that contains a 0.
I've read that it might be a good idea to do it with awk, but I don't have any idea of how to use it.
Files are very long, like 2000 lines for example (they are video traces)
Line 1: 123456 Line 2: 789012 Line 3: 345678 Line 4: 901234
Line 1: 1 Line 2: 0 Line 3: 0 Line 4: 1
After the execution:
Line 1: 123456 Line 2: 901234
You can use
cut for this:
paste fileB fileA | grep '^1' | cut -f2-
paste fileB fileA- pastes file contents side by side, delimited by a tab
grep '^1'- filters that lines that start with 1
cut -f2-- extracts the content that we need
paste use tab as the default delimiter.
This is very similar to Benjamin's solution. A small advantage here is that it would work even if fileA were to have more than one field per line.