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AWK question in the KORN shell

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# 8  
Old 02-04-2005
Thanks
What can I say...if I could offer you guys a job I would!

I tested it and it works great
# 9  
Old 02-04-2005
A slight variation on the awk theme:


Code:
nawk '
    BEGIN {
        FS = OFS = ";"
    }
    FNR==NR { arr[$1]; next} 
    $1 in arr {
        $2 = 50
    }
    1
' val_id.txt gmrd.txt

# 10  
Old 02-08-2005
Quote:
Originally Posted by Ygor
Using awk...
Code:
awk '
    BEGIN {
        FS = OFS = ";"
        while (getline < "val_id.txt" > 0)
            arr[$1] = 1
    }
    $1 in arr {
        $2 = 50
        $NF =  $NF "<---debug: line changed"
    }
    {print}
' gmrd.txt

Tested...
Code:
235649;50;2563;598<---debug: line changed
291802;00;2563;598
314634;00;235649;598
235649;50;2563;598<---debug: line changed
393692;00;2563;598
411805;00;2563;598
411805;00;2563;598
235649;50;2563;598<---debug: line changed
414037;00;2563;598
etc.

Remove the debug line if this is what you wanted.
Ygor,
In your code you have the line 'while (getline < "val_id.txt" > 0)', what is the '> 0'. Is this redirection or relational operator?

Thanks in advance
# 11  
Old 02-08-2005
I am checking that the return value from getline is greater than zero.

This quote is from: http://www.cs.uu.nl/docs/vakken/st/n..._25.html#SEC28
Quote:
getline returns 1 if it finds a record, and 0 if the end of the file is encountered. If there is some error in getting a record, such as a file that cannot be opened, then getline returns -1.
# 12  
Old 02-09-2005
Thanks Ygor
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