I made some progress, with read-from-minibuffer the function I need, however I want to terminate the script and suppress the error information at the end.

─○ cat text1.txt | emacs -batch --eval "(while t (princ (read-from-minibuffer \"\") (terpri)))"

Here is some text
Will it be tripled?

Here is some text
Will it be tripled?

Here is some text
Will it be tripled?
Debugger entered--Lisp error: (end-of-file "Error reading from stdin")
  read-from-minibuffer("")
  (princ (read-from-minibuffer "") (terpri))
  (while t (princ (read-from-minibuffer "") (terpri)))
  eval((while t (princ (read-from-minibuffer "") (terpri))) t)
  command-line-1(("--eval" "(while t (princ (read-from-minibuffer \"\") (terpri)..."))
  command-line()
  normal-top-level()

This sounds exactly like what I’m looking for. I will check it out.

Here is the solution for my .zsh_history example:

I first created a small function for the unix time string. More of the functionality in the replacement string can be included if preferred.

    (defun rgx-get-time-string (unixtimestr)
     (format-time-string "%Y-%m-%d %H:%M" (string-to-number unixtimestr))
      )

The search string: \(: \)\([0-9]\{10\}\)\(:0;\)

The replacement string: \,(concat (format "%6d " (line-number-at-pos)) (rgx-get-time-string (match-string 2)) " "))

(match-string 2) is an alternative for the back reference for the second string matched\2

And how is this a meaningful answer to the question?

Is there some rule that questions asked here shouldn’t be asked on stackexchange too?