When using the command: k:\apps\rr.exe * “(\D+)(\d)\.jpg” “$1000$2.jpg”

To pad the filename with numbers to 4 digits with zeros, I’ve found that this works ok except when the placing the $1 at the start of any replacement filename.

I’ve tried many possible combinations of placing “^” and “$” and in the search filename text with no joy.

The below shows an example:

pic_1.jpg -> $10001.jpg
pic_2.jpg -> $10002.jpg
pic_3.jpg -> $10003.jpg
pic_4.jpg -> $10004.jpg
pic_5.jpg -> $10005.jpg
pic_6.jpg -> $10006.jpg
pic_7.jpg -> $10007.jpg
pic_8.jpg -> $10008.jpg
pic_9.jpg -> $10009.jpg

Is there a way to overcome this apparent bug?

One thing to remember is that the search and replacement patterns are regular expressions, and a “period” (.) in a regular expression matches any character.

So this command:

rr *.txt "..txt" "2.txt"

Really means “replace [anything][anything]txt” with “.txt”.

Instead, you’ll want to escape the period so it’s taken literally:

rr *.txt "\.\.txt" ".txt"

Then it should just replace files with “..txt” in the name.

My test examples:

RR.exe *.txt " .txt" ".txt"
name with space .txt -> name with space.txt

RR.exe *.txt "\..txt" ".txt"
name with double period at end..txt -> name with double period at end.txt

Hope that helps!

To rename:
“file..ext” to “file.ext”
rr *.txt “..txt” “.txt”
It doesn’t work, I rename all the files.
What am I wrong?

The file match is based on the regex, we’re not relying on the OS matching at all.

@huynh: I don’t think rename-regex is needed for that, but you should be able to do a loop in a batch file starting with the highest number, moving it forward by one, decrementing the number by one, moving that forward by one, etc.

Thank you VERY much!
Tom

For UNC paths, can you “pushd” to them first so the folder is mapped as a local letter?

I’ve just verified that this command should work:

RR *.txt "([0-9]+)_([a-z]+)" "$2_$1" /p
123_xyz.txt -> xyz_123.txt (pretend)

I need to rename file like in your example: “123_xyz.txt” to “xyz_123.txt”.

.\RR.exe *.txt "([0-9]+)_([a-z]+)" "$2_$1" showed the help, so I modified in this:
.\RR.exe *.txt "(?[0-9]+)_(?[a-z]+)" "${1}_${2}" but the result is the following:
124_xyz.txt -> _.txt (pretend)

Where am I wrong?
Thank you very much

Hi Peter! I hope to have some time soon to add that option (and others). I’ve filed some Github issues to track this: https://github.com/nicjansma/rename-regex/issues

You have the recommendation to change this line 56 in Program.cs:

Hmm, I am not a programmer. If it that easy: could you provide a changed RR version WITH upper/lowercase attention?

Thank you
Peter

@Jim – Feel free to open an Issue on the Github project page or a Pull Request if you’re inclined!

https://github.com/nicjansma/rename-regex/

You could use something like this maybe, with a replacement pattern?

rr * “(.*set[0-9]+img[0-9]+).*” “$1” /p

That would remove everything after set#img#

I have a filename pattern like .*set.*[0-9]img.*[0-9].*
To explain that in plain english (if my regex is off) the filenames start with any string of unknown characters (including periods, hyphens, commas, apostrophes, etc) followed by a specific pattern set#img# (where the number is between 1-4 digits long), followed by another string of unknown characters.

I need to remove all characters after the set#img# pattern in the middle. Any advice?


RR.exe * "^(.*)$" "prefix$1"
RR.exe * "^(.*)$" "$1suffix"


The suffix code added the suffix two times
FILENAME.ZIP –> FILENAME.ZIPsuffixsuffix

I tried to edit the code, but it always added something at the end.

The app currently ignores case in the RegEx, but you can change this line 56 in Program.cs:

// rename via a regex
string fileNameAfter = Regex.Replace(fileName, nameSearch, nameReplace, RegexOptions.IgnoreCase);


To remove RegexOptions.IgnoreCase:


// rename via a regex
string fileNameAfter = Regex.Replace(fileName, nameSearch, nameReplace);


I need to rename a couple of files that would contain only the lowercase english chars (ie. ŽČs.jpg -> zcs.jpg)

Is that possible?

Thx,

CZNeo

For all other cases, this tool would help.