I am trying to do some hardcore substitution in a chunk of text, where the things I am searching for and substituting are stored in a hash ...

my %hash;
$hash{'usernamevar'} = "mr.dunstan";

Now lets look at the untouched content ...

I am usernamevar.

drum roll ...
*.*.* magical perl regexp thingy happens *.*.*
I am mr.dunstan.

"Ta da!"

The content now has the value of $hash{'usernamevar'} magically substituted wherever the text usernamevar appears in the content.

"There are only 35 chambers, there is no 36th."
"I know ... I want to create a new one ..." - Shaolin Master Killer

In reply to using a hash to do substitution? by mr.dunstan

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