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Report formatting in NAWK....

Posted on 2004-10-05
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Last Modified: 2010-04-21
Hi,

I have a comma delimited file called lstname.rpt which is being brought into a nawk statement to generate a report. However, the report is not formatting very well.

#!/usr/bin/ksh

# Report generator for Last Name search results

nawk 'BEGIN {FS=","}
{print "Last Name \t First Name \t Depart City \t Arrival City \t Flight No \t Status \t Depart Date"}
{print "---------------------------------------------------------------------------------------------------"}
{print $1"\t",$2"\t",$3"\t",$4"\t",$5"\t",$6"\t\t",$7}' lstname.rpt

OUTPUT:

Last Name      First Name      Depart City      Arrival City      Flight No      Status      Depart Date
---------------------------------------------------------------------------------------------------
SMITH     BRAD     STL     DEN     147     DELAYED         2004/05/11
Last Name      First Name      Depart City      Arrival City      Flight No      Status      Depart Date
---------------------------------------------------------------------------------------------------
SMITH     DAVE     PIT     OAK     222     CANCELLED         2004/07/15
Last Name      First Name      Depart City      Arrival City      Flight No      Status      Depart Date
---------------------------------------------------------------------------------------------------
SMITH     ROD     DEN     LAX     214     ONTIME         2004/08/21
Would you like to do another search by Last Name:

How do I get report to look like:

Last Name     First Name     Depart City     Arrival City     Flight No     Status     Depart Date
--------------------------------------------------------------------------------------------------------
SMITH          BRAD             STL                DEN              147             OT         2004/05/11
SMITH          DAVE             PIT                 OAK              222             CA         2004/07/15


All fields are variable length and are dependant on what the user inputs.

Thanks,

Sam
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Question by:elwayisgod
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2 Comments
 
LVL 23

Accepted Solution

by:
brettmjohnson earned 375 total points
ID: 12233608
Move the first two print statements to inside the BEGIN block so they are executed only
once at the beginning of the program.  As you have it now, they execute for every input line.


nawk 'BEGIN {FS=",";
  print "Last Name \t First Name \t Depart City \t Arrival City \t Flight No \t Status \t Depart Date";
  print "---------------------------------------------------------------------------------------------------"}
{print $1"\t",$2"\t",$3"\t",$4"\t",$5"\t",$6"\t\t",$7}' lstname.rpt



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LVL 23

Expert Comment

by:brettmjohnson
ID: 12233627
I also suggest you use printf rather than print so you can get better formatting control.
As you have it, if anyone's name exceeds 8 characters, your tabs will throw the whole
line off.

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