It's difficult to help you when you've made it so difficult to understand what you want because of the poor formatting of your post. I've made my best shot, is this the sort of thing you want? 
while ( <DATA> )
{
    next if m/(?:start up server)|(?:-- logging started)|(?:-- disconn
+ected user)/;
    print
}
__DATA__
081407 start up server
081407 -- fatal error in procedure 1
081407 -- disconnected user
081407 -- logging started
081407 -- not enough space

[download]

Output:

081407 -- fatal error in procedure 1
081407 -- not enough space

[download]

You should ask your friend to tell you how to format your posts, and read How do I compose an effective node title? and Writeup Formatting Tips.

In reply to Re: regular expression help by FunkyMonk
in thread regular expression help by wantamad

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


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