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    Grep: Difference between revisions

    Content added Content deleted
    imported>mutante
    mNo edit summary
    imported>Kunda
    m (cosmetics w/ <tt> | whaddya think?)
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    How can I list just the names of matching files?
    How can I list just the names of matching files?
    :'''<tt>grep -l 'main' *.c</tt>'''


    grep -l 'main' *.c


    How do I search directories recursively?
    How do I search directories recursively?
    :'''<tt>grep -r 'hello' /home/gigi</tt>'''


    grep -r 'hello' /home/gigi


    Suppose I want to search for a whole word, not a part of a word?
    Suppose I want to search for a whole word, not a part of a word?
    :'''<tt>grep -w 'hello' *</tt>'''


    grep -w 'hello' *


    How do I output context around the matching lines?
    How do I output context around the matching lines?
    :'''<tt>grep -C 2 'hello' *</tt>'''


    grep -C 2 'hello' *


    How can I search in both standard input and in files?
    How can I search in both standard input and in files?
    :'''<tt>Use the special file name `-':</tt>'''

    :'''<tt>cat /etc/passwd | grep 'alain' - /etc/motd</tt>'''
    Use the special file name `-':

    cat /etc/passwd | grep 'alain' - /etc/motd




    Line 32: Line 30:


    try
    try

    <pre>
    $ cat FILENAME|grep SUCHWORT1|grep UND_SUCHWORT2|grep -v OHNE_SUCHWORT3|grep -i SuChWoRt4
    '''<tt>$ cat FILENAME|grep SUCHWORT1|grep UND_SUCHWORT2|grep -v OHNE_SUCHWORT3|grep -i SuChWoRt4</tt>'''

    </pre>





    Revision as of 23:05, 10 February 2006

    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

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