Spring Into Linux®

grep (find text in files)

Searches one or more files for text that matches regular expressions. The grep command is described in Chapter 7.

Format:    grep pattern filelist
Examples:  grep "^Table [0-9]:" *

Displays each line that matches the regex. The filename and line number is listed.

Opt	What It Does	Example
-A n	Display n lines after the match	grep -A 3 Table *
-B	Display n lines before the match	grep -B 3 Table *
-c	Display only count of matched lines, not the text	grep -c Table *
-C	Display two lines before and after the matching line	grep -C include *
-i	Ignore case	grep -I Table report*
-r	Search files in subdirectories also	grep -r Table *
-v	Display lines that do not match	grep -v Error *
-w	Match whole words only	grep -w Table *.txt
-x	Match whole lines only ...