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How can I delete whitespace from middle of string but keep whitespace at beginning? – Apache

Sometime years ago ALL of our Apache config files changed to have whitespace all over the place (see below, no idea who did it). Since I am upgrading from 2.2 to 2.4 this makes it tricky to find and replace all the required config changes.

I thought to get rid of the whitespace in the middle but keep the whitesapce at the front. I know how to replace at the beginning, end and everywhere. I even consulted a few books (e.g. Jeff Friedl’s regexp) but I cannot get my head around this – not even sure whether this is possible.

  <Directory            "THEDIRECTORY">
    <LimitExcept        GET POST>
      deny              from all
    </LimitExcept>
    Options             -Indexes -MultiViews
    AllowOverride       All
    Order               allow,deny
    Allow               from all
  </Directory>

What I would like is this:

  <Directory "THEDIRECTORY">
    <LimitExcept GET POST>
      deny from all
    </LimitExcept>
    Options -Indexes -MultiViews
    AllowOverride All
    Order allow,deny
    Allow from all
  </Directory>

So I can easily search for and replace the config changes for apache 2.4

I thought coming from the end

s/s+(.*)s+(.*)s+$/$1$2/g

but this does not work for a number of reasons including that the number of replacements change, they are a non fixed number.

Help please, I am clueless.

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2

Answers


  1. 0

    You can use this regex to match any horizontal whitespace two or more at a time and replace it with a single space.

    (?<=S)h{2,}(?=S)

    This regex ensures, only space will be matched that is surrounded by some non-space character using S

    Regex Demo

    In case h is not supported in your regex, you can use just a space instead of h and write your regex as,

    (?<=S) {2,}(?=S)

    Demo using space only

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  2. 0

    Ensure your add the following line to your .htaccess or apache conf file dire tory tag if it’s not already there:

    RewriteEngine On

    Then below add

    RewriteCond %{REQUEST_URI} s

    RewriteRule .* https://DOMAIN_NAME/ [R=301,L]

    Replacing DOMAIN_NAME.

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