How To Create A Text (TXT) File On A Mac
Let's say you have an website stored on your computer as a series of html documents. As a cutting edge developer, you've seen the CSS light and want to delete all the tags wherever they're just saying e. In fact, what you really want to know is wherever those patterns show up in a font tag, but you don't care about anywhere else that they might appear. The -i tells grep to ignore case otherwise it's case sensitive, and won't match 'FONT' if you're looking for 'font' or 'Font'. The -r tells it to recursively descend through the directories from wherever the command starts -- in this case, all htm and html files in the current directory.
Everything in single quotes is the pattern we're matching. We tell grep to match on any text that starts with " thus staying within the font tag , and then either the face or size definition that we're interested in. The one glitch here is that line breaks can break things, though there are various ways around that.
Finding them is left as the proverbial exercise for the reader.
Presumably you want to edit those files in order to fix them, right? With that in mind, maybe it would be useful to just make a list of matches. Grep normally outputs all the lines that match the pattern, but if you just want the filenames, use the -l switch. If you want to save the results into a file, redirect the output of the command accordingly.
But we can do better still. If you are comforable with the vi editor, you can call vi with that command directly.
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And if you want to get really ambitious, you can use these techniques in ways that allow you to do all your editing directly from the command line, without having to go into an interactive editor such as vi or emacs or whatever. If you make it this far in your experiments, then the next step is to learn to filter the results of a match and process the filtered data in some way, using tools such as sed, awk, and perl.
Using these tools, you can find all instances of the pattern in question, break it down however you like, substitute or shuffle the parts around however you like, and then build it all back up again. This is fun stuff! By this point, you're getting pretty heavily into Unix arcana, and the best book that I've seen about these tricks is O'Reilly's Unix Power Tools , by various authors.
I'm trying to respond to a programmer -- I'm not one -- to help figure out why something isn't working. And my carpal tunnel is too bad to retype all the filenames I can see sigh.
Lost your password? Powered by the Parse. The -r flag tells grep to recursively search directories. Of course, OS X has something like 26, files, so this can take a very long time! Quickly find any text string in any set of files 3 comments Create New Account. The following comments are owned by whoever posted them. This site is not responsible for what they say. If the weird name throws you, "grep" is an acronym for "general regular expression program". If that doesn't help, it's probably because you're wondering what a regular expression "re" or "regex" is.
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I don't want these files in the result list; I only want files whose content is thistext. I've used grep , but it's not working properly for me. Is there a way to customize grep or mdfind command to work for me?
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I think there are some syntax errors in the above answer. I just tested this in AppleScript, and it works for me in Yosemite The cdw at the end of the query string means the comparison should ignore c ase, d iacritics, and w idth which is mostly relevant for text with Asian characters. Also, if you're doing this from an app, you shouldn't invoke the mdfind command as a subprocess.
You should use the NSMetadataQuery class to do it within your app. Listen now.
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Learn more. Ask Question. Asked 3 years, 7 months ago. Active 3 months ago. Viewed 1k times. Or if there is any AppleScript script available for performing such task? Peter Mortensen
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