Change

Will change all files with ‘old’ file extension to have the ‘new’ file extension.

Remove

Will remove the ‘old’ file extension.

Simple!

rgbstock.com

That’s all there is to it! grep is the command, r makes the search recursive (i.e. in the target folder and all its sub-folders), l means it will list the name of all the files where it finds the text, "some text" is the string to search for, and finally, the dot at the end means to start the search in the current directory. And just to clarify, this searches for text inside of files, in the content of the files; not the filenames.

There, now I know where to find it when I forget it next time. And perhaps I have helped someone else too

Good night!

I know I’m using bash, and I don’t really care about the version. Or that I’m using bash actually… But anyways, to make it more useful you can run this:

You will then get a prompt which contains your username, hostname and current working directory. Much more useful in my opinion. If you have a different opinion, please share

You can find more stuff to put in your prompt by reading the prompting section of the bash man page.

Slow way

1. Open your Start Menu
2. Go to All Programs
3. Go to Accessories
4. Right-click Command Prompt
5. Select Run as administrator
6. Answer Yes to the following User Account Control question

Fast way

1. Open your Start Menu
2. Type cmd in the search field, and you should have an item called cmd.exe selected
3. Press Ctrl + Shift + Enter
4. Answer Yes to the following User Account Control question

After following either of those, you should now have an elevated Command Prompt window running in front of you.

And now I have a simple guide I can link to if I mention elevated Command Prompt windows on my blog

Turned out it was quite simple to enable and disable this feature. To enable it, just open up a Terminal and run the following command:

When you reboot the next time, you will see all the fun stuff happening during the boot up. If you get tired of it, you can disable it again by running:

That’s it!

This can be quite a handy feature, but not so much when it doesn’t work. My problem was that I would give a bunch of files color labels, but then shortly after that the label simply disappeared. I could look at the file in the Finder, it had its label, I’d click on it, and the label disappeared. In fact the color label was already gone, it was just that the Finder is kind of slow to update itself… O’ how I miss F5 sometimes…

Anyways, you can check if a file really has a label or not by opening up a Terminal and using the following command on the file in question:

It will give you back a number and if the number is greater than zero it means the file has a label.

But what to do about it?

After some digging I found that it might have to do with some XSan issues or corrupt meta files. Mac OS X spreads these meta-files around wherever it goes and apparently they go corrupt from time to time. A quick and simple way to fix this issue is just to clear them all out and let Finder have fun recreating them. As these files are hidden in the Finder, and Mac OS X is so kind to not give us an easy way of showing hidden files, I once again opened up a Terminal. I then went to the directory with the broken meta-files and ran these two commands:

All the labels should then be gone in Finder if you check the folder again. Now re-label them and they should hopefully stay labeled as well. Hope this can help someone else

Doing it recursively

The following command will do it for the current working directory and all its sub-directories:

Files with no extension

If you have filenames without an extension, like for example Some video instead of Some video.mov, Finder won’t know how to open these files anymore after you remove the meta-files. If that should happen I recommend that you add the right extension on the filename and you will have no more problems with that. If you prefer to have it without extension you can also select and right-click the files, select Get Info, and then under the Open with category select the application you want the file to be opened with. But seriously, just giving the files proper extensions to begin with is a lot easier to work with… at least I think so…

Remove .DS_Store files

Removes all those stupidannoying DS_Store files that Mac litters around wherever it goes. Works in the current directory and downwards.

Recursivly download a whole website

Compress and decompress files

Find open files