Batch rename files regular expression on Mac

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I'm trying to batch rename PDF files to remove all characters from right to left until a numeric character is reached on Mac OS.

For example:

10002ASmith.pdf > 10002.pdf

1023AJones.pdf > 1023.pdf

The numeric length in the beginning of the files is variable so I figure would be best to have regex rename from right to left until a number is reached.

I know Mac Yosemite comes with batch rename capabilities but didn't see a regex rename option. Is it easy to do this in terminal and if so how, or is there a free program I can use to use a regular expression?

I suppose I just need to know what the actual regular expression would be since I'm far from experienced in regex.

Thank you for help in advance!


You can use this find with sed:

cd to /path/of/pdfs

while IFS= read -rd '' line; do
   echo mv "$line" $(sed 's~\./[a-zA-Z]*\([0-9]*[a-zA-Z]\).*\(\.pdf\)$~\1\2~' <<< "$line")
done < <(find . -maxdepth 1 -regex '\./[a-zA-Z]*[0-9]*[a-zA-Z]\{1,\}\.pdf$' -print0)

Remove echo after you verify it is working.

Regex to batch rename files in OS X Terminal, An efficient way to perform the rename operation is to construct the rename commands in a sed pipeline and feed them into the shell. ls | sed -n  regex-renamer is a free, open-source and cross-platform application to batch rename files given a regular expression. regex-renamer is an extensible utility to rename files of a folder based on a

Transnomino, Rename many files at once, simple, powerful and it's free! replacements using Regular Expressions and insertions of text based on attributes of the files. Batch rename files in macOS [duplicate] Ask Question Batch rename files regular expression on Mac (3 answers) Closed 25 days ago. I have a lot of files that need

NameChanger sounds like a good fit for this purpose - it's free, and will preview the proposed batch regex rename before applying it.

In the example below, I've used the regex ^(\d+).*, and replaced with $1.pdf.

Renamer, Renamer is a batch file renaming app for macOS that allows you to rename lots of Insert image width and height; Match and substitute regular expressions  Let’s quickly reveal it and see what it can do for you. Open the folder where the files to be batch renamed are located in the Finder on your Mac. When you’ve opened the folder, select all the files that you’d like to rename. Press Command + A to select all or use the Command button to make custom multiple selection.

How to Batch Rename Files on Mac OS X Easily from Finder , You can try for a in *.jpg ; do mv -- "$a" "${a:22:4}-${a:26:2}-${a:28:2} ${a:30:2}-${​a:32:2}-${a:34:2}.jpg" ; done. A bit ugly, but it should get the  From the developer: RegexRenamer is a powerful but simple user-friendly graphical tool used to batch rename files using regular expressions. A regular expression (or regex) is simply text that contains special characters that together defines a pattern that can be used to match text, in this case filenames. You may want to check out more software for Mac, such as pdf-FieldMerge, Catenator or MacAppStuff Touch, which might be similar to regex-renamer.

Rename file in Mac OS Terminal using Regex, I sometimes have to batch rename files temporarily to run another tool that Does it support regular expressions in the replacement text? Automator is a handy application that comes included with Mac OS X, so it should already be on your Mac computer. Here's how to rename a lot of files at once in Mac OS X using Automator. Open Automator. You can click on it in Launchpad, or

NameChanger for Mac: Free Download + Review [Latest Version], A Better Finder Rename is a powerful and flexible batch file renaming utility, but sometimes a scenario arises for which ABFR doesn't provide  Transnomino - A free batch rename utility for the Mac. Rename many files at once, simple, powerful and it's free!

  • Uh, you use -print0 predicate in find but don't handle it afterwards, so the command doesn't work.
  • You're right, I stand corrected. But are you sure that it is IFS= specifically? I tried read without IFS= but with the -d '' option and it did work.
  • Could you provide a case where IFS= is needed? I ran the following command, having .pdf files with spaces in the directory: find . -maxdepth 1 -name '*.pdf' -print0 | while read -d '' line; do echo $line; done and it prints whole filenames on separate lines. So wouldn't appropriate quoting be sufficient?
  • Thank you for this solution @anubhava - this worked perfectly and I appreciate the fast response!
  • @anubhava This is perfect! Thank you so much for your kind help, I greatly appreciate you taking the time to do so.
  • Thank you for this explanation @werkritter!