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Re: TRICKY TASK USING AWK [message #92796 is a reply to message #92795] Tue, 01 March 2016 01:37 Go to previous messageGo to previous message
Mats Löfdahl is currently offline  Mats Löfdahl
Messages: 263
Registered: January 2012
Senior Member
Den tisdag 1 mars 2016 kl. 07:12:13 UTC+1 skrev Sapna Mishra:
> Hi Heinz Stege ,
> Error is as following:
>
> IDL> cmd ='awk -v var="$i" ''{print $var}'' ' + fname[i] + ' > ' + fnameo[i]
> % Variable is undefined: I.
> % Execution halted at: $MAIN$
> IDL> print,'awk -v var="$i" ''{print $var}'' ' + fname[i] + ' > ' + fnameo[i]
> % Variable is undefined: I.
> % Execution halted at: $MAIN$
> IDL>

I think you need to do that inside the loop to get a useful error message. Or just set i to something between 0 and c.
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