Question

I’ve long been wondering about this question;
say I first try to grep some lines from a file:

cat 101127_2.bam |grep 'TGATTACTTGCTTTATTTTAGTGTTTAATTTGTTCTTTTCTAATAA'

Then it’ll pop out the whole line containing this string.
However, can we use some simple bash code to locate at which line this string locates? (100th? 1000th?…)

Answer 1

grep -n 'TGATTACTTGCTTTATTTTAGTGTTTAATTTGTTCTTTTCTAATAA' 101127_2.bam

I found it using man grep and writing /line number

// EDIT: Thanks @Keith Thompson I’m editing post from cat file | grep -n pattern to grep -n pattern file, I was in a hurry sorry