I have line of 3 long numbers separated by comma. What I want to do is to delete the number in the middle, and leave only first number and last number separated by a comma.



Desired result:


I tried doing this, but it didn't work with these regular expressions:

  • regular expression to find string: %[0-9]+,[0-9]+,[0-9]+
  • regular expression to replace string: ^1,^2

Which regular expression actually does what I want to achieve?

Note - I'm currently using an application called Ultraedit that runs on Windows 7, if you recommend a better text editing application for Windows that can solve my problem please let me know.

  • I edited your question, if you are unhappy with the changes feel free to revert or edit it again. – Baarn Aug 1 '12 at 10:50

You can simply replace the middle number of each line with nothing.

In the editor

That is, in your editor, search-and-replace the regex


(which only matches numbers with commas on both sides, which for your input is just the middle number) with a single comma:


I assume Ultraedit supports regex search-and-replace. If not, try Notepad++, which I know does.

From the command line

Since you tagged your question , here's how to do it from the command-line.


Use sed, a standard Linux command also available for Windows as part of Cygwin or GnuWin32:

C:\>sed -e 's/,[0-9]+,/,/g' filename.txt


Jens pointed out that you can also do it in Windows Powershell; see this explanation.

| improve this answer | |

Regex syntax varies from application to application. I am unfamiliar with Ultredit and will give a generaql anser

Your regex lacks capturing parentheses


| improve this answer | |

In order to replace text, one needs to tag the proper sub-expression using parentheses.

In UltraEdit, you must search for the following regular expression:

| improve this answer | |

Awk Equivalent!

echo "$Variable" | awk 'FS="," { print $1","$3 } '

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.