GREP Tips

Search for black OR white:
grep 'black\|white' files


 Search for searchtext at the beginning of a line in files:
grep '^searchtext' files


Search for searchtext at the end of a line in files:

grep 'searchtext$' files


Search files for blank lines:
grep '^$' files


Search files for US formatted phone numbers (###-###-####):
grep '[0-9]\{3\}-[0-9]\{3\}-[0-9]\{4\}' files


Search for e-mail or email in files:
grep e-*mail files


Search for searchtext case-insenstively in files:
grep -i searchtext files


 Search for searchtext at the beginning of a line in files:
grep '^searchtext' files


Search for lines infiles that contain both partial_name and function:
  grep partial_name files | grep function