Comments on: grep is a beautiful tool http://eriwen.com/tools/grep-is-a-beautiful-tool/ Programming productively with open-source tools Fri, 11 May 2012 19:13:05 +0000 hourly 1 http://wordpress.org/?v= By: A few helpful command line tools « albert causo http://eriwen.com/tools/grep-is-a-beautiful-tool/#comment-6190 A few helpful command line tools « albert causo Tue, 24 May 2011 03:22:03 +0000 http://eriwen.com/?p=60#comment-6190 [...] grep [...] [...] grep [...]

]]> By: grep for pdfs | MyGNU.de http://eriwen.com/tools/grep-is-a-beautiful-tool/#comment-3989 grep for pdfs | MyGNU.de Tue, 09 Nov 2010 08:51:08 +0000 http://eriwen.com/?p=60#comment-3989 [...] text in multiple files.  If you don´t know it already you can find some information about grep here.  Sadly it can not be used for searching in pdf files, which is certainly an important task. [...] [...] text in multiple files.  If you don´t know it already you can find some information about grep here.  Sadly it can not be used for searching in pdf files, which is certainly an important task. [...]

]]> By: Vasudev Ram http://eriwen.com/tools/grep-is-a-beautiful-tool/#comment-3259 Vasudev Ram Fri, 14 May 2010 15:51:24 +0000 http://eriwen.com/?p=60#comment-3259 find with xargs and any other command is quite powerful, though, of course. find with xargs and any other command is quite powerful, though, of course.

]]> By: Vasudev Ram http://eriwen.com/tools/grep-is-a-beautiful-tool/#comment-3258 Vasudev Ram Fri, 14 May 2010 15:42:40 +0000 http://eriwen.com/?p=60#comment-3258 Actually, on UNIX / Linux and variants (and maybe also on Windows with Cygwin - though you may have to test that), this works for what Bob wants (and is simpler, since you don't need to use find with grep for this): grep 'object' *.pas *.dfm *.any_other_number_of_extensions_or_patterns # Doesn't even have to be a filename extension, e.g.: grep 'object' *abc* def* *ghi jkl*mno* # and so on ... And this - i.e. the ability to pass any number of any kind of wildcard patterns in the arguments to a command - works for ALL commands at the *nix command line - the reason for it is a little known fact - that the wildcard (and more generally, *nix metacharacter expansion) is handled by the _shell_ (bash, ksh, etc.) - BEFORE the shell invokes the command at all. That is, the shell does all the expansions of metacharacters and then invokes the command with the expanded command line. (Contrast this with DOS where the wildcard expansion is handled by individual commands and so works only for those commands which implement it internally.) See Kernighan and Pike - The UNIX Programming Environment - for more on this. HTH Vasudev Actually, on UNIX / Linux and variants (and maybe also on Windows with Cygwin – though you may have to test that), this works for what Bob wants (and is simpler, since you don’t need to use find with grep for this):

grep ‘object’ *.pas *.dfm *.any_other_number_of_extensions_or_patterns

# Doesn’t even have to be a filename extension, e.g.:

grep ‘object’ *abc* def* *ghi jkl*mno* # and so on …

And this – i.e. the ability to pass any number of any kind of wildcard patterns in the arguments to a command – works for ALL commands at the *nix command line – the reason for it is a little known fact – that the wildcard (and more generally, *nix metacharacter expansion) is handled by the _shell_ (bash, ksh, etc.) – BEFORE the shell invokes the command at all. That is, the shell does all the expansions of metacharacters and then invokes the command with the expanded command line. (Contrast this with DOS where the wildcard expansion is handled by individual commands and so works only for those commands which implement it internally.) See Kernighan and Pike – The UNIX Programming Environment – for more on this.

HTH
Vasudev

]]> By: Eric Wendelin http://eriwen.com/tools/grep-is-a-beautiful-tool/#comment-3257 Eric Wendelin Fri, 14 May 2010 14:50:34 +0000 http://eriwen.com/?p=60#comment-3257 Yeah, I just use find . -name \*.pas -o -name \*.dfm | xargs grep -nP 'object' Find/grep is a powerful combo :) Yeah, I just use

find . -name \*.pas -o -name \*.dfm | xargs grep -nP ‘object’

Find/grep is a powerful combo :)

]]> By: Bob http://eriwen.com/tools/grep-is-a-beautiful-tool/#comment-3256 Bob Fri, 14 May 2010 14:41:19 +0000 http://eriwen.com/?p=60#comment-3256 Is there a way to search multiple file extensions without having to type multiple '--include' statements? It would be nice to be able to do something like this: grep -r --include=*.pas;*.dfm 'object' . But this doesn't seem to work. Any insights? Is there a way to search multiple file extensions without having to type multiple ‘–include’ statements? It would be nice to be able to do something like this:

grep -r –include=*.pas;*.dfm ‘object’ .

But this doesn’t seem to work. Any insights?

]]> By: links for 2009-03-04 | it's about time http://eriwen.com/tools/grep-is-a-beautiful-tool/#comment-2218 links for 2009-03-04 | it's about time Wed, 04 Mar 2009 10:02:56 +0000 http://eriwen.com/?p=60#comment-2218 [...] grep is a beautiful tool - Eric Wendelin’s Blog Global Regular Expression Print is a staple of every command-line user’s toolbox. As with find, it derives a lot of power from being combined with other tools and can increase your productivity significantly. Following is a simple tutorial that will help you realize the power of this simple and most useful command. (tags: reference howto tutorial linux unix bash shell commands grep) [...] [...] grep is a beautiful tool – Eric Wendelin’s Blog Global Regular Expression Print is a staple of every command-line user’s toolbox. As with find, it derives a lot of power from being combined with other tools and can increase your productivity significantly. Following is a simple tutorial that will help you realize the power of this simple and most useful command. (tags: reference howto tutorial linux unix bash shell commands grep) [...]

]]> By: richard http://eriwen.com/tools/grep-is-a-beautiful-tool/#comment-2015 richard Sat, 29 Nov 2008 02:24:07 +0000 http://eriwen.com/?p=60#comment-2015 I would like to have a conversion doc to transcribe from OS 9 arabic fonts to OS X arabic fonts. I wrote a page of equivalences a=^ and in BBedit noticed grep has a base there but how would I write a command line such that all the individual letters change at once? Or can i pay someone to write it? thanks I would like to have a conversion doc to transcribe from OS 9 arabic fonts to OS X arabic fonts. I wrote a page of equivalences a=^ and in BBedit noticed grep has a base there but how would I write a command line such that all the individual letters change at once? Or can i pay someone to write it?
thanks

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