Here's another version. When running one-liners it is extremely useful to learn the command line operators. Here's a short breakdown:

• use -aF: to split on the ':' and store it in @F
• use -l to automatically chomp $/
• use -0 (minus zero) to specify the input record separator ($/) as the null character
• use -n to loop over every line of input
• use -e to run the script following it

• the first expression prints the counter if the line contains name
• the second expression prints the right side of the ':' if the line contains name or date
• the last expression prints a newline (or record separator) if the line contains date

 perl -al0nF: -e 'print /name/&&++$x,/name|date/&&$F[1],/date/&&$/' data.txt

the data file contains:

name: url1.domain1.com
date: 2004/2/1
unwanted info: blah blah blah

name: url2.domain5.org
date: 2004/3/2
unwanted info: blah blah blah

name: url3.domain1.com
date: 2004/2/3
unwanted info: blah blah blah

name: url4.domain5.org
date: 2004/3/4
unwanted info: blah blah blah

name: url5.domain1.com
date: 2004/2/5
unwanted info: blah blah blah

name: url6.domain5.org
date: 2004/3/6
unwanted info: blah blah blah
[download]

and here are the results of running the script:

1 url1.domain1.com 2004/2/1
2 url2.domain5.org 2004/3/2
3 url3.domain1.com 2004/2/3
4 url4.domain5.org 2004/3/4
5 url5.domain1.com 2004/2/5
6 url6.domain5.org 2004/3/6
[download]

Change all the ' into " to run on win32

HTH.

--
hiseldl
What time is it? It's Camel Time!