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How to search for files containing specific word?

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2  
Do you actually mean search file NAMES containing with a specific word in them? ie: all files that have the term FUN in their names, , FUN_time.txt FUN_stuff.txt Or search INSIDE a file for specific words? –  dr_willis May 2 '11 at 13:39

3 Answers 3

up vote 15 down vote accepted

With command line you have several options. The 3 I use the most are...

  1. locate {part_of_word}

    This assumes your locate-database is up to date but you can update this manually with: sudo updatedb

  2. grep as explained by dr_willis. One remark: -R after grep also searched within directories. Example:

    cd\
    grep -R {something_to_look_for} {where_to_look_in}
    
  3. find . -name '*{part_of_word}*' -print

Where . is the directory where you are at the moment and * is a wildcard.

Oh and you can also combine these. Example: locate {something}|grep {some_part_of_something}|more

If I recall correctly: locate is the fastest one (assuming your database is up to date) and find is the slowest one. And grep is the most complex one of these since you can use regexes.

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grep -R "what" "where"

example:

grep -R hello /home

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The grep command is commonly used for this.

grep PATTERN filename

and grep can do some very complex searching.

willis@Cow:~$ grep --help
Usage: grep [OPTION]... PATTERN [FILE]...
Search for PATTERN in each FILE or standard input.
PATTERN is, by default, a basic regular expression (BRE).
Example: grep -i 'hello world' menu.h main.c
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3  
or you can do "rgrep word ." to recursively search every file and subdirectory for "word" –  Jeremy Bicha May 2 '11 at 12:48

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