grep number of lines code example
Example 1: grep count lines
cat myfile | wc -l
Example 2: grep count lines
cat -n myfile
Example 3: grep show lines above and below
grep -C 3 foo README.txt
Example 4: grep count lines
grep -c ^ filename
Example 5: grep line number in linux
$ grep -in null myfile.txt
2:example two null,
4:example four null,