comp.lang.idl-pvwave archive: archive » TRICKY TASK USING AWK

Home » Public Forums » archive » TRICKY TASK USING AWK

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: TRICKY TASK USING AWK [message #92776 is a reply to message #92774]

Fri, 26 February 2016 07:09

Mats Löfdahl
Messages: 263
Registered: January 2012

Senior Member

Den fredag 26 februari 2016 kl. 15:55:43 UTC+1 skrev Sapna Mishra:
> if my_awk command is : -v var="$i" '{print $var} then how i will proceed??
>
> I am doing:
>
> cmd ='awk -v var="$i" '{print $var}' ' + fname[i] + ' > ' + fnameout[i]
> and on:
> print,cmd I am getting:
> IDL> print,cmd
> % PRINT: Variable is undefined: CMD.
> % Execution halted at: $MAIN$

You need to escape the single quotes inside the single-quoted string:

IDL> cmd ='awk -v var="$i" ''{print $var}'' '
IDL> print,cmd
awk -v var="$i" '{print $var}'

Report message to a moderator

[Message index]

		TRICKY TASK USING AWK By: Sapna Mishra on Fri, 26 February 2016 01:20
		Re: TRICKY TASK USING AWK By: dg86 on Fri, 26 February 2016 04:03
		Re: TRICKY TASK USING AWK By: Sapna Mishra on Fri, 26 February 2016 06:55
		Re: TRICKY TASK USING AWK By: Mats Löfdahl on Fri, 26 February 2016 07:09
		Re: TRICKY TASK USING AWK By: Sapna Mishra on Mon, 29 February 2016 07:57
		Re: TRICKY TASK USING AWK By: Paul Van Delst[1] on Mon, 29 February 2016 08:07
		Re: TRICKY TASK USING AWK By: Heinz Stege on Mon, 29 February 2016 09:33
		Re: TRICKY TASK USING AWK By: Sapna Mishra on Mon, 29 February 2016 08:58
		Re: TRICKY TASK USING AWK By: wlandsman on Mon, 29 February 2016 09:44
		Re: TRICKY TASK USING AWK By: Sapna Mishra on Mon, 29 February 2016 22:08
		Re: TRICKY TASK USING AWK By: wlandsman on Tue, 01 March 2016 07:39
		Re: TRICKY TASK USING AWK By: wlandsman on Tue, 01 March 2016 19:36
		Re: TRICKY TASK USING AWK By: Sapna Mishra on Mon, 29 February 2016 22:12
		Re: TRICKY TASK USING AWK By: Mats Löfdahl on Tue, 01 March 2016 01:37
		Re: TRICKY TASK USING AWK By: Mats Löfdahl on Tue, 01 March 2016 01:50

Previous Topic:	Looping through structures
Next Topic:	Segmentation fault (core dumped)

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Oct 08 13:36:44 PDT 2025

Total time taken to generate the page: 0.00362 seconds