grep -r -n -B1 -A1 --include=*.c strstr *
findstr /S "MB_ICONHAND" *.h
Ever need to search through all your files for a certain word or phrase? I did, and to make matters more complicated, the files were all in different sub-directories. A quick Google search turned up a few scripts involving multiple commands and temporary files. Then I found a simpler solution.
If you're a Unix/Linux/BSD user, you probably know about the grep command, but did you know it's recursive? That's right, grep can search through your entire directory tree, scanning every file along the way. It will even return the results in multiple formats!
Here's an example. In this case we're searching for the word "modules":
grep -r "modules" .
By using the "-r" switch, we're telling grep to scan files in the current directory and all sub-directories. It will return a list of files the string was found in, and a copy of the line it was found on.
If you'd rather just get the file names and skip the rest of the output, use the "-l" switch, like so:
grep -lr "modules" .
Here's another tip: grep also supports regular expressions, so matching against a wildcard pattern is easy:
grep -lr "mod.*" .
That command will print a list of files containing any word starting with "mod".
You can also use grep to search for multiple words:
grep -r "drupal\|joomla\|wordpress" .
And, of course, grep supports file name wildcards in the standard unix fashion. In this example, grep will search only file names starting with "log":
grep -lr "mod.*" ./log*
Unfortunately, not all versions of grep support recursive searching, and some use different switches, so if you're running into problems, check your man pages:
All commands listed in this tutorial have been tested on the latest version of FreeBSD.
If you want to learn more about Grep, check out the Grep Pocket Reference!
Posted by John on 2008-02-05
FINDSTR [/B] [/E] [/L] [/R] [/S] [/I] [/X] [/V] [/N] [/M] [/O] [/P] [/F:file]
[/C:string] [/G:file] [/D:dir list][/A:color attributes] [/OFF[LINE]]
/B Matches pattern if atthe beginning of a line.
/E Matches pattern if atthe end of a line.
/L Uses search stringsliterally.
/R Uses search strings as regular expressions.
/S Searches for matchingfiles in the current directory and all
/I Specifies that the search is not to be case-sensitive.
/X Prints lines that match exactly.
/V Prints only linesthat do not contain a match.
/N Prints the line number before each line that matches.
/M Prints only thefilename if a file contains a match.
/O Prints characteroffset before each matching line.
/P Skip files withnon-printable characters.
/OFF[LINE] Do not skip files with offline attribute set.
/A:attr Specifies color attribute with two hex digits.See "color /?"
/F:file Reads file list from the specified file(/stands for console).
/C:string Uses specified string as a literal search string.
/G:file Gets search strings from the specified file(/stands for console).
/D:dir Search a semicolon delimited list ofdirectories
strings Text to be searched for.
Specifies a file or files to search.
Use spaces to separate multiple search strings unless the argument is prefixed
with /C. For example, 'FINDSTR "hello there" x.y' searches for"hello" or
"there" in file x.y. 'FINDSTR /C:"hello there" x.y'searches for
"hello there" in file x.y.
Regular expression quick reference:
. Wildcard: any character
* Repeat: zero or moreoccurrences of previous character or class
^ Line position: beginning ofline
$ Line position: end of line
[class] Character class: any one character in set
[^class] Inverse class: any one character not in set
[x-y] Range: any characters within the specified range
\x Escape: literal use ofmetacharacter x
\<xyz Word position: beginning of word
xyz\> Word position: end of word
For full information on FINDSTR regular expressions refer to the online Command