extracting specific lines in a text file

hgwells3 · #1 (**permalink**) 07-10-04, 13:14

vgersh99 · #2 (**permalink**) 07-10-04, 13:47

nawk -f hq.awk yourInput > yourSpecialOutput

here's hq.awk

Code:

BEGIN {
  FS="[|]"
  TAGusers="users"
  TAGspecialusers="Special users"
  PAT_IPaddress="[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+"
}

$0 ~ TAGusers { block=0 }
$0 ~ TAGspecialusers { block=1 }

block && match($1, PAT_IPaddress) { print $1 }

hgwells3 · #3 (**permalink**) 07-10-04, 16:39

Wow, thanks! That works great. Is it possible to run that nawk body within a unix bash script, or must it be in separate file?

hg

vgersh99 · #4 (**permalink**) 07-10-04, 17:12

Code:

nawk '
BEGIN {
  FS="[|]"
  TAGusers="users"
  TAGspecialusers="Special users"
  PAT_IPaddress="[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+"
}

$0 ~ TAGusers { block=0 }
$0 ~ TAGspecialusers { block=1 }

block && match($1, PAT_IPaddress) { print $1 }
' yourInput > yourSpecialOutput

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