This is what envsubst
is for.
echo 'Hello $USER'
Hello $USER
echo 'Hello $USER' | envsubst
Hello malvineous
You would probably use it more like this though:
envsubst < input.txt > output.txt
envsubst
seems to be part of GNU gettext.
This is what envsubst
is for.
echo 'Hello $USER'
Hello $USER
echo 'Hello $USER' | envsubst
Hello malvineous
You would probably use it more like this though:
envsubst < input.txt > output.txt
envsubst
seems to be part of GNU gettext.