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From: | João Eiras |
Subject: | Re: How to test if stdin is empty, if not empty print to stdout, otherwise do something else. |
Date: | Wed, 25 Mar 2020 01:42:24 +0100 |
https://www.gnu.org/software/bash/manual/html_node/Bash-Builtins.html if read -t 0 -u 0; then # -u 0 is optional and just here as example echo stdin has input waiting else echo stdin is empty fi You can play with the timeout parameter to retrieve incomplete lines of input.
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