grep

grep- Fine-Tune Your Searches

To Find…	Use This Option	Example
Text in subfolders	-r	grep -r Walden ~/Documents/* Finds Walden in any file in any subfolder of ~/Documents.
Whole words only	-w	grep -w live Finds only live ; does not find liver , lives , lived , and so on.
Case-insensitive text	-i	grep -i pond Finds pond , POND , or Pond .
File names only	-l	grep -l Walden Finds files containing Walden , but returns only a list of file names.
Number of occurrences only	-c	grep -c Walden Returns the names of files containing Walden and the number of hits in each file.