So if you wanted to do our prior command but dodge files in node_modules it could be amended thus for a test run, then again without the -n when you are happy: zmv -n '(^node_modules)/(**/)(*).css' '$1_$2.scss' If you want a few more examples, Filipe has some more examples, including how to ignore folders and more. Zmv is obviously capable of much more but if it’s something you only need to do once every so often this will give you enough to go on!. Then, once you are happy everything is as you need, run it again without the flag. So we would first run that prior command like this: zmv -n '(**/)(*).css' '$1_$2.scss'Īnd that will give you a display of what is going to happen to each file. You can run zmv commands first with the -n flag. Now, if you went with that prior command, typed it in and pressed enter, zmv will do its thing, and you’d better keep everything crossed you got everything right! Thankfully, zmv lets you perform a ‘dry run’. In my case this was because I wanted them as Sass partials, which are designated with the underscore. Each thing we ‘captured’ is represented by a $ in the second set of quotes, so you can see in this case that not only did I change the file extension, I added a proceeding _ before it. Then we can manipulate what we have ‘captured’ in the second set of quotes. Each is within a set of parenthesis, the first is the file path, (**/) and the second the file name, (*). Within the first one, zmv is letting us do two sets of replacements/groups. Zmv lets us swap one thing with another, so everything in the first set of quotes with everything in the second set of quotes. But don’t go doing that yet!! zmv '(**/)(*).css' '$1_$2.scss' The basics of how zmv works First, get into a parent folder of all the files you want to rename. Now, I’ll show you the command that did my bidding, and then hopefully explain what’s going on. First you will need to load the zmv function by running autoload zmv from the command prompt. So assuming you have ZSH, let’s take a look at what we can do. It’s the default shell in macOS these days so if you are on Catalina onwards – you already have it. So, as zmv requires ZSH shell, at the risk of stating the obvious, you’ll need a ZSH shell. So, to reiterate my my use case, I had a project where I wanted to change all files ending in. Turns out this is a great little tool I’d not used before, and as it met my needs beautifully, I thought I’d give a brief overview for my future self and any passing travellers. It was suggested I look at zmv which works in the ZSH shell. So I happened to ask in the Sublime Text Discord how people did this. I didn’t fancy renaming them ‘by hand’, and the Finder batch rename is only really useful when all the files are in one folder and/or you can easily select them all. There were around a hundred files nested in many different sub-folders. I had a situation today where I wanted to migrate a large-ish codebase from standard CSS files to Sass files with a *.scss file extension. This governs which files/folders are going to be displayed on the screen.This is a quick tip rather than an involved tutorial. The only real exception to the above rules is Group 12. For example, the program will make any replacements (Group 3) before it changes case (Group 4). The number beside each box merely denotes the sequence in which they are processed. The rest of the boxes are all very similar. In the “New Name” column you will see what the new name is going to look like, for each and every file you have selected. Then highlight all your filenames (mouse, keyboard, Ctrl+A etc.). For example if you want to replace all underscores (_) in a filename with spaces, all you do is this: In Group 3 simply enter an underscore in the Replace box, and enter a space in the With box. are not exactly very descriptive are they? I use BulkRename (free) which allows you to add and or remove prefixes and postfixes and indeed other info to your selected file names. Being able to give your files sequential numbers is all very well but file names like document1, document2 etc.
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