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Full Discussion: Having Problems with AWK
Top Forums Shell Programming and Scripting Having Problems with AWK Post 302903964 by rrdein on Saturday 31st of May 2014 09:55:19 AM
Old 05-31-2014
Having Problems with AWK
So, I'm having a lot of crazy problems with Awk that I cannot understand. This one in particular is driving me nuts. Here is one section of my Awk script:

Code:
    print $0
    
    sub(/Jan/,"",$2)
    sub(/Feb/,"",$2)
    sub(/Mar/,"",$2)
    sub(/Apr/,"",$2)
    sub("May","",$2)
    sub(/Jun/,"",$2)
    sub(/Jul/,"",$2)
    sub(/Aug/,"",$2)
    sub(/Sep/,"",$2)
    sub(/Oct/,"",$2)
    sub(/Nov/,"",$2)
    sub(/Dec/,"",$2)

    print $0

and here is the single line that is in the datafile I am working with:


Code:
Thursday, May 29, 2014,4,11,20 PM GMT-0700,1,Hard to get mario and pokemon gamecube cases ,http,//www.listia.com/auction/17243312-hard-to-get-mario-and-pokemon-gamecube

I am trying to simply delete the word, "May", and do nothing else. I have tried this a few different ways, using a double-quoted string instead of RegExp, and the output was exactly the same. Here is the output I am getting:

Code:
Thursday, May 29, 2014,4,11,20 PM GMT-0700,1,Hard to get mario and pokemon gamecube cases ,http,//www.listia.com/auction/17243312-hard-to-get-mario-and-pokemon-gamecube
Thursday   29  2014 4 11 20 PM GMT-0700 1 Hard to get mario and pokemon gamecube cases  http //www.listia.com/auction/17243312-hard-to-get-mario-and-pokemon-gamecube

You can see that after running the script, I am somehow getting a very weird result. The word "May" has been stripped from the second field, but somehow all of the commas have also been stripped from the output.

For the record I am using Gawk under Ubuntu. Any help is greatly appreciated.

---------- Post updated at 05:55 AM ---------- Previous update was at 05:43 AM ----------

Here is a more complete explanation. This is the datafile:

Code:
"Thursday, May 29, 2014","4:11:20 PM GMT-0700","1",                      "Hard to get mario and pokemon gamecube cases"           ,"http://www.listia.com/auction/17243312-hard-to-get-mario-and-pokemon-gamecube"

This is the AWK script:

Code:
{
    gsub(/\ \ /, "")
    gsub(/\"/, "")
    
    gsub(/\:/, "\,")
       
    print $0
    
    sub(/Jan/,"",$2)
    sub(/Feb/,"",$2)
    sub(/Mar/,"",$2)
    sub(/Apr/,"",$2)
    sub("May","",$2)
    sub(/Jun/,"",$2)
    sub(/Jul/,"",$2)
    sub(/Aug/,"",$2)
    sub(/Sep/,"",$2)
    sub(/Oct/,"",$2)
    sub(/Nov/,"",$2)
    sub(/Dec/,"",$2)

    print $0
    
    gsub(/" AM"/, "\,AM", $4)
    gsub(/" PM"/, "\,PM", $4)
    gsub(/" GMT"/, "\,GMT", $4)
    
    gsub(/\ /,"", $2)

    gsub(/\ /,"", $3)

}

And, here are the two output lines, printed before and after the block of code pertaining to the months above.

Code:
Thursday, May 29, 2014,4,11,20 PM GMT-0700,1,Hard to get mario and pokemon gamecube cases ,http,//www.listia.com/auction/17243312-hard-to-get-mario-and-pokemon-gamecube
Thursday   29  2014 4 11 20 PM GMT-0700 1 Hard to get mario and pokemon gamecube cases  http //www.listia.com/auction/17243312-hard-to-get-mario-and-pokemon-gamecube

The command I am using to launch awk is:

gawk -F, -f <awkfile> <datafile>

hope that helps
Last edited by rrdein; 05-31-2014 at 11:04 AM..
 

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