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How to use SPAWN for creating multiple output files? [message #88735]

Wed, 11 June 2014 03:00

atmospheric physics is currently offline

atmospheric physics
Messages: 121
Registered: June 2010

Senior Member

Hello,

I have multiple *.nc files. I want to create SHA 256 checksum file for each of the datafile.

In linux shell, I get the checksum info as:
$ sha256sum XYZ_1000.nc'
89654655f1a75fc398fb86c9f56c255bb991768eb223a6defa1f1d5d0ede f6aa XYZ_1000.nc

So, I tried to use the same in IDL as below:

IDL> spawn, 'sha256sum XYZ_201304000.nc'
89654655f1a75fc398fb86c9f56c255bb991768eb223a6defa1f1d5d0ede f6aa XYZ_1000.nc

As I have created all the *.nc data files in IDL program, I would like to add few lines below to create respective checksum file (e.g., <myfile>.sha256 ).

I have my datafiles as - XYZ_1000.nc, XYZ_1001.nc, XYZ_1002.nc, ....
I would like to copy the checksum output

89654655f1a75fc398fb86c9f56c255bb991768eb223a6defa1f1d5d0ede f6aa

to the new file - XYZ_1000.sha256

I know it can be done directly on linux terminal but I want to create simultaneously in the IDL code.

Can anyone help me how I can do this in IDL using SPAWN command?

Thanks in advance,
Madhavan

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[Message index]

		How to use SPAWN for creating multiple output files? By: atmospheric physics on Wed, 11 June 2014 03:00
		Re: How to use SPAWN for creating multiple output files? By: Mats Löfdahl on Wed, 11 June 2014 05:40
		Re: How to use SPAWN for creating multiple output files? By: Matthew Argall on Wed, 11 June 2014 06:02
		Re: How to use SPAWN for creating multiple output files? By: atmospheric physics on Wed, 11 June 2014 07:24

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