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pattern matching over multiple lines and deleting the first

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#1 (permalink)

3 Weeks Ago

durden_tyler durden_tyler is offline

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Join Date: Apr 2009

Posts: 536

Or something like this:

Code:

$
$ cat -n tst.log
     1  blah
     2  blah
     3  Uplink traffic:
     4  Downlink traffic:
     5  blah
     6  Uplink traffic:
     7  Downlink traffic:
     8  Uplink traffic:
     9  Dropped packets: 40
    10  Downlink traffic:
    11  blah
    12  blah
$
$ perl -ne 'BEGIN{undef $/} $x=$_; END{$x=~s/Uplink.*?\nDownlink/Downlink/g; print $x}' tst.log
blah
blah
Downlink traffic:
blah
Downlink traffic:
Uplink traffic:
Dropped packets: 40
Downlink traffic:
blah
blah
$
$

tyler_durden

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