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Asked: 2026-06-14T06:03:21+00:00

Using Perl find I cannot successfully escape a DOCTYPE declaration in search string. Here

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Using Perl find I cannot successfully escape a DOCTYPE declaration in search string. Here is an example of a string that I am searching for; 

find . -type f|xargs -d "\n" perl -pi -e 's/ <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1\.0 Transitional//EN" "http://www\.w3\.org/TR/xhtml1/DTD/xhtml1-transitional\.dtd">//g'

to replace the doctype declaration with nothing. Please if someone can properly escape this string so that a perl find can find any string would greatly be appreciated.

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1 Answer

  1. Editorial Team

    You can use other delimiters besides / in Perl. Try this:

    s{<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1\.0 Transitional//EN" "http://www\.w3\.org/TR/xhtml1/DTD/xhtml1-transitional\.dtd">}{}g

    Since the slash is no longer delimiting the regex, it is safe to use.

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