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how to redirect multiple input files?


 
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Top Forums Shell Programming and Scripting how to redirect multiple input files?
# 8  
Old 09-26-2009
Thanks. But I still do not know how to resolve the problem.
The program is launched by following command,

prog file1 - file2 -

When I enter the command, it will process file1, and then read from stdin(-) until I enter Ctrl D. and then process file2, and then read from stdin(-) until Ctrl D.

I can embed the data from stdin into shell script. How do I do this in the script without any interactive input? Because there are two EOF, perhaps I also can not use here doc. Struglling for 2 days... Thanks.


Quote:
Originally Posted by cfajohnson
You cannot redirect from a command with <; the argument must be a file.

If your shell has process substitution, you can do:

Code:
process < <(cat f1 f2)

Or use a here document:

Code:
process <<.
$( cat f1 f2 )
.

# 9  
Old 09-27-2009
You could try putting a ^D in the here document (in vi by entering Ctrl-v followed by Ctrl-d) and see if that works, otherwise perhaps an expect script may be a better way to go.

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