I have a file called a.txt that is 100 lines long.
grep rake a.txt | wc #returns 10 lines
grep -v rake a.txt | wc #returns 90 lines
grep Rake a.txt | wc #returns 3 lines
one of these 100 lines has both, but I want lines with only 'Rake'. I have tried grep Rake a.txt | grep -v rake a.txt | wc returns 90 lines?
I want to find all 3 lines with 'Rake', pipe it into grep, find if any of those 3 lines include 'Rake' but not 'rake', and then use wc to count the lines that do. I could use redirect to make another file and then grep -v that new file, but that's not really my goal here. I'm sure it's something simple, but how do I fix my command?
I have tried
grep Rake a.txt | grep -v rake a.txt | wcreturns 90 lines?
The point of piping is that the output of a command feeds the next one. Instead, you are piping and then saying grep -v rake a.txt, which makes the previous command superfluous.
So you just need to pipe normally:
grep Rake a.txt | grep -v rake | wc
# ^
# removed a.txt
You can also use awk and tell it to count lines containing Rake, not rake. Finally, print the counter:
awk '/Rake/ && !/rake/ {count++} END {print count+0}' a.txt
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