Sublime: remove part of the row, in all columns

Question

I have a very big text file with multiple lines.

I want to remove a portion of the text file in every line. This portion is at the same place for every line

For example

ABC.com/I_WANT_THIS_DELETED
ABC.com/I_WANT_THIS_DELETED

Repeat for thousand times.

I know i can press *CONTROL + LEFT CLICK, in order to set multiple cursors and mass delete.

But this is extremely impractical, as there are thousands of links.

How can i set a number of characters in the first row, and then select all that part for every row, so i can delete it?

Answer 1

Say you want to delete everything after 20 characters. Open Find → Replace… and enter

(^.{20})(.*$)

in the Find field and

\1

in the Replace field. Ensure the Regular Expression and Wrap buttons are selected, then hit Replace or Replace All.

EXPLANATION

MATCH
(^.{20})        first group
 ^              start from beginning of line
  .             match any character
   {20}         20 times exactly

        (.*$)   second group
         .      match any character
          *     zero or more times
           $    until the end of the line

REPLACE
\1              replace with group 1