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paulwib/expand.sh

Created September 17, 2021 18:44
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Dangerously expanding a file with environment vars
Raw
expand.sh
#!/usr/bin/env sh
export BAR="living on the edge"
export FRED="be careful!"
eval "echo \"$(cat file_with_vars.txt)\""
Raw
file_with_vars.txt
# Here's my vars, now I want to expand them with content from my shell environment variables
FOO=$BAR
FRED=$QUX
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paulwib commented Sep 17, 2021

Probably a better option is envsubst.

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