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How to tell < file apart from any other redirection within a bash functi
From: |
Peng Yu |
Subject: |
How to tell < file apart from any other redirection within a bash function? |
Date: |
Sun, 8 Mar 2020 15:54:42 -0500 |
Hi,
I'd like to tell the first case apart from all other possible cases.
a_bash_func is a bash function.
a_bash_func < a_file
Other cases,
cmd | a_bash_func
a_bash_func < non_file(maybe a fifo or something else other than file)
...
Is the following the best way to perform such a test to know whether
it is the first case within a_bash_func? Thanks.
[[ -f /dev/fd/0 ]]
--
Regards,
Peng
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