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fentas/check-input-method.sh

Created February 15, 2019 16:24
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checks how input is redirected into shell script
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check-input-method.sh
#!/bin/sh
if file "$(readlink /proc/$$/fd/0)" | grep -q "character special"; then
echo "Standard input:"
elif readlink /proc/$$/fd/0 | grep -q "^pipe:"; then
echo "Pipe input:"
else
echo "File input:"
fi
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