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19 lines
236 B
Markdown
19 lines
236 B
Markdown
# Envsubst
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Substitutes environment variables in shell format strings.
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## TL;DR
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```sh
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envsubst < input.file
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envsubst < input.file > output.file
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```
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```sh
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$ cat hello.file
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hello $NAME
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$ NAME='mek' envsubst < hello.file
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hello mek
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```
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