Show HN: Dotenv, if it is a Unix utility

225 点作者 gyf304大约 1 年前

I like the idea of using dotenv files, but I dislike having to use different language-specific libraries to read them.To solve this, I created a small utility that lets you prefix any command with "dotenv" to load the ".env" file.This is how I imagine dotenv would work if it had started as a UNIX utility rather than a Node.js library.

19 条评论

petepete大约 1 年前

I think direnv already does a good job in this space, and it's already available in your package manager.<a href="https://direnv.net/" rel="nofollow">https://direnv.net/</a>

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tuyiown大约 1 年前

Please just see this`env -S "$(cat .env)" <cmd>`Believe it or not that’s all you need.> S, --split-string=S process and split S into separate arguments; used to pass multiple arguments on shebang linesedit: forgot the quotes around shell substitution

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grounder大约 1 年前

Compare with dotenvx - <a href="https://github.com/dotenvx/dotenvx">https://github.com/dotenvx/dotenvx</a> This is my current tool of choice.

kazinator大约 1 年前

I just remembered. Adding a -f <file> option to the GNU Coreutils env utility has previously been discussed:<a href="https://lists.gnu.org/archive/html/coreutils/2021-10/msg00001.html" rel="nofollow">https://lists.gnu.org/archive/html/coreutils/2021-10/msg0000...</a>It came up in the mailing also this March. I saw the posting in my inbox and proposed that a null-terminated format be handled, which is exactly like /proc/<pid>/env:<a href="https://lists.gnu.org/archive/html/coreutils/2024-03/msg00140.html" rel="nofollow">https://lists.gnu.org/archive/html/coreutils/2024-03/msg0014...</a>If that feature were available, this becomes<pre><code> env -f .env command arg ...</code></pre>

miohtama大约 1 年前

There is also shdotenv that allows you to load different .env file formats and convert between them, e.g. for UNIX shell.<a href="https://github.com/ko1nksm/shdotenv">https://github.com/ko1nksm/shdotenv</a>

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tester457大约 1 年前

dotenv started as a ruby library actually. The first implementation inspired the others such as the golang version of the library.

whalesalad大约 1 年前

<pre><code> export $(cat .env | xargs) </code></pre> Agree with the premise but this can be achieved with actual Unix concepts no need for anything else.The language runtime dotenv projects are banned in my engineering org.

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mongol大约 1 年前

Would notsh -c '. .env; echo $MY_VAR'do the same thing? (I am not in front of a shell at the moment.)

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iDon大约 1 年前

Thanks to OP and other posters - various ideas useful in different cases.The xargs idea made me think of using bash as the parser :<pre><code> bash -c "exec -c bash -c 'source $CONFIG/main.bash; env'"</code></pre> This test .bash file contains multiple source-s of other .bash files, which contain a mix of comments, functions, set and env vars - just the env vars are exported by env. This seems useful e.g. for collating & summarising an environment for docker run -e.This outputs the env vars to stdout; for the OP's purpose, the output could be sourced :<pre><code> envFile=$(mktemp /tmp/env.XXXXXX); bash -c "exec -c bash -c 'source $CONFIG/main.bash; env'" > $envFile; env $(cat $envFile) sh -c 'echo $API_HOST' </code></pre> # For Bourne shell, use env -i in place of exec -c :sh -c "env -i sh -c '. $CONFIG/main.sh; env'" > $envFile

andy_ppp大约 1 年前

This looks good and neater than my solution in my .zshrc:envup() {<pre><code> local file=$([ -z "$1" ] && echo ".env" || echo ".env.$1") if [ -f $file ]; then set -a source $file set +a else echo "No $file file found" 1>&2 return 1 fi</code></pre> }You can also specify `envup development` to load .env.development files should you want. Obviously this will pollute the current shell but for me it is fine.

belthesar大约 1 年前

This is interestingly similar to a little tool I wrote called sops-run [0], which manages encrypted secrets for cli tools using Mozilla’s sops [1]. Biggest upshot is that you can use it more confidently for secrets with encryption at rest. Built it when I was trying out CLI tools that wanted API keys, but I didn’t want to shove them into my profile and accidentally upload them into my dotfiles repository. Do need to finally get back to making this a package, being able to install it with pip(x) would be really nice.[0] <a href="https://github.com/belthesar/sops-run">https://github.com/belthesar/sops-run</a>[1] <a href="https://github.com/getsops/sops">https://github.com/getsops/sops</a>

vishvananda大约 1 年前

Doesn’t this already exist as <a href="https://www.npmjs.com/package/dotenv-cli" rel="nofollow">https://www.npmjs.com/package/dotenv-cli</a> ?

supriyo-biswas大约 1 年前

I wrote my own some time ago: <a href="https://github.com/supriyo-biswas/dotfiles/commit/39585b42c24ae2d18112d142cf6081354eb29c77">https://github.com/supriyo-biswas/dotfiles/commit/39585b42c2...</a>

wodenokoto大约 1 年前

Since loading dotenv files happens together with executing code I I have decided to trust my .env files just like I trust the rest of my code not to delete my entire system and therefore I source them.

KevinMS大约 1 年前

I never understood why it had to be a dot file, except for naming it.

fire_lake大约 1 年前

Does this accept the exact same format (including quotes and whitespace) as a Docker env file? That’s a key feature for me

prmoustache大约 1 年前

I don't understand what more it does than sourcing a file on your shell would? Anyone can explain?

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kzrdude大约 1 年前

This idea seems to be cloned everywhere now, so something is causing the popularity

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bitwize大约 1 年前

C? Y u no Rust?

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