Tcl_PutEnv(3)

✨ Tcl_PutEnv — bestie edition 💖

okay so this is a page from the Tcl Library Procedures manual, section 3, and it's literally all about Tcl_PutEnv. yes, that's the whole vibe. sit with me, we're gonna talk about environment variables. 🌸

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🎀 NAME 🎀

Tcl_PutEnv — the procedures that manipulate the environment. that's it, that's the name. 💅

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✨ SYNOPSIS ✨

#include <tcl.h>

int
Tcl_PutEnv(assignment)

like, you include the header, you get an int back, you hand it one thing. iconic. 🦋

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🫶 ARGUMENTS 🫶

• const char *assignment (in) — the tea about your environment variable, and it has to be in the format NAME=value. important bestie: the assignment argument is in the system encoding. don't forget that part, it matters. 😭

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💖 DESCRIPTION 💖

okay so here's the deal. Tcl_PutEnv sets an environment variable. and the way it works is so simple it's giving minimalism: all the info gets passed in one single string of the form NAME=value. one string. no fancy struct, no extra args, just the string. slay. ✨

this procedure is intended to be a stand-in for the UNIX putenv system call. like, it's doing the same job, but make it Tcl. 🧚

and here's the part you actually need to remember: all Tcl-based applications that use putenv should redefine it to Tcl_PutEnv so that they will interface properly to the Tcl runtime. not "could", not "might wanna" — should. it's giving non-negotiable. if you skip this, your app and the Tcl runtime are not on speaking terms and that's a whole mess. 🙈

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🌈 SEE ALSO 🌈

• env(n) — go read that one too, bestie. 👑

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⭐ KEYWORDS ⭐

environment, variable

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and that's the whole page, no cap. this one's from the Tcl manual, version 7.5, page Tcl_PutEnv(3). thanks for reading my little infodump, ily, go set some environment variables responsibly 🍓💜✨