The grep command searches one or more input files for lines containing a match to a specified pattern.
How can I list just the names of matching files?
- grep -l 'main' *.c
How do I search directories recursively?
- grep -r 'hello' /home/gigi
Suppose I want to search for a whole word, not a part of a word?
- grep -w 'hello' *
How do I output context around the matching lines?
- grep -C 2 'hello' *
How can I search in both standard input and in files?
- Use the special file name `-':
- cat /etc/passwd | grep 'alain' - /etc/motd
more on
http://www.gnu.org/software/grep/doc/grep.html
try
$ cat FILENAME|grep SUCHWORT1|grep UND_SUCHWORT2|grep -v OHNE_SUCHWORT3|grep -i SuChWoRt4
manpage
<man>grep</man>
jargon
<jargon />