awk (previous value)

[AliAmanAmarAdel]

I have been trying to print previous value of a column when the value of the current column is blank?<br>ie..<br>yesterday&nbsp;&nbsp;&nbsp;&nbsp;07/09/00<br>today&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;07/10/00<br>thisday&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>tommorow&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;07/11/00 <br><br>when the second column is &quot;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&quot; I want to print &quot;07/10/00&quot;.<br>I have not been able to store value of a previous line in AWK?<br><br>Any suggestions?

 

[flogrr]

This should work for you.<br><br>Put your example input into a file called &quot;infile&quot;, then, run this awk one line script from the command line.<br><br>cat infile ¦ awk '{ if( $2 ) prev = $2 } { if( NF == 1 ) $1 = $1&quot;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&quot;prev } { print }'<br><br><br>Hope this helps you.<br><br> <p>flogrr<br><a href=mailto:flogr@yahoo.com>flogr@yahoo.com</a><br><a href= > </a><br>