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Full Discussion: how to redirect multiple input files?
Top Forums Shell Programming and Scripting how to redirect multiple input files? Post 302356627 by microstarwwx on Saturday 26th of September 2009 12:48:41 PM
Old 09-26-2009
Quote:
Originally Posted by varontron
not exactly sure what your requirement is, but it sounds like:

redirect standard in from 2 files _at the same time_ to a single process

that is done like this:
Code:
cat f1 f2|process

or this
Code:
process<cat f1 f2

'cat' concatenates the files, so this is nearly equivalent to the following:

Code:
process < f1
process < f2

Thanks for your reply. But it still does not work. It says "cat: No such file or directory".
My program command can run like this: "./a.out file1.txt - file2.txt -", when the parameter is a file name, it will read file content, otherwise, when the parameter is a hyphen, it will read from stdin(just like "cat file1 - file2 -"). I need write a test script to run this program, however, I don't know how to redirect two file for stdin. Anybody can help me? Thanks.
 

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