Die grep-Hilfe sagt:
8><-------------------------------------------------------------------------------
Suche nach MUSTER in jeder DATEI oder der Standardeingabe.
Beispiel: grep -i ´Hallo Welt´ menu.h main.c
Auswahl und Interpretation regulärer Ausdrücke:
-E, --extended-regexp PATTERN is an extended regular expression
-F, --fixed-strings PATTERN is a set of newline-separated strings
-G, --basic-regexp PATTERN is a basic regular expression
-P, --perl-regexp PATTERN is a Perl regular expression
-e, --regexp=MUSTER MUSTER als regulären Ausdruck verwenden.
-f, --file=FILE MUSTER aus DATEI lesen.
-i, --ignore-case Unterschied zwischen Groß- und Kleinschreibung
ignorieren.
-w, --word-regexp MUSTER paßt nur auf ganze Wörter.
-x, --line-regexp MUSTER paßt nur auf ganze Zeilen.
-z, --null-data Eine Zeile endet mit Nullbyte, nicht Newline.
Verschiedenes:
-s, --no-messages Fehlermeldungen unterdrücken.
-v, --revert-match Nicht-passende Zeilen anzeigen.
-V, --version Versionnummer ausgeben und beenden.
--help Diese Hilfe ausgeben und beenden.
--mmap Wenn möglich, Eingabe in den Speicher mappen.
Output control:
-m, --max-count=NUM stop after NUM matches
-b, --byte-offset print the byte offset with output lines
-n, --line-number print line number with output lines
--line-buffered flush output on every line
-H, --with-filename print the filename for each match
-h, --no-filename suppress the prefixing filename on output
-o, --only-matching show only the part of a line matching PATTERN
-q, --quiet, --silent suppress all normal output
--binary-files=TYPE assume that binary files are TYPE
TYPE is ´binary´, ´text´, or ´without-match´
-a, --text equivalent to --binary-files=text
-I equivalent to --binary-files=without-match
-d, --directories=ACTION how to handle directories
-b, --byte-offset print the byte offset with output lines
-n, --line-number print line number with output lines
--line-buffered flush output on every line
-H, --with-filename print the filename for each match
-h, --no-filename suppress the prefixing filename on output
-o, --only-matching show only the part of a line matching PATTERN
-q, --quiet, --silent suppress all normal output
--binary-files=TYPE assume that binary files are TYPE
TYPE is ´binary´, ´text´, or ´without-match´
-a, --text equivalent to --binary-files=text
-I equivalent to --binary-files=without-match
-d, --directories=ACTION how to handle directories
ACTION is ´read´, ´recurse´, or ´skip´
-D, --devices=ACTION how to handle devices, FIFOs and sockets
ACTION is ´read´ or ´skip´
-R, -r, --recursive equivalent to --directories=recurse
--include=PATTERN files that match PATTERN will be examined
--exclude=PATTERN files that match PATTERN will be skipped.
--exclude-from=FILE files that match PATTERN in FILE will be skipped.
-L, --files-without-match only print FILE names containing no match
-l, --files-with-matches only print FILE names containing matches
-c, --count only print a count of matching lines per FILE
-Z, --null print 0 byte after FILE name
Context control:
-B, --before-context=NUM print NUM lines of leading context
-A, --after-context=NUM print NUM lines of trailing context
-C, --context=NUM print NUM lines of output context
-NUM same as --context=NUM
--color[=WHEN],
--colour[=WHEN] use markers to distinguish the matching string
WHEN may be `always´, `never´ or `auto´.
-U, --binary do not strip CR characters at EOL (MSDOS)
-u, --unix-byte-offsets report offsets as if CRs were not there (MSDOS)
`egrep´ means `grep -E´. `fgrep´ means `grep -F´.
With no FILE, or when FILE is -, read standard input. If less than
two FILEs given, assume -h. Exit status is 0 if match, 1 if no match,
and 2 if trouble.
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... ist alles drin, was er sucht - regular expression und Dateinamen angeben (Wildcards gehen) und ab die Reise, Ergebnis dann in eine Datei umleiten oder nach less pipen - für son Kleinkram muss man nicht scripten
