ARDUINO-CLI-CORE-UPDATE-INDEX(1)

✨ arduino-cli-core-update-index(1) ✨

okay bestie, welcome to the Arduino Command Line Manual — yes, that's the whole manual name, and yes, you're currently in the arduino-cli-core-update-index corner of it 💖

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🌸 NAME 🌸

arduino-cli-core-update-index — literally just updates the index of cores. that's it. that's the whole job 🎀

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🦋 SYNOPSIS 🦋

arduino-cli core update-index [flags]

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✨ DESCRIPTION ✨

It updates the index of cores to the latest version. slay, fresh index, no cap 💅

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👑 OPTIONS 👑

• -h, --help[=false] — the help for update-index. shows up when you need it, defaults to false because it's not out here throwing itself at you unprompted 🙈

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🧚 OPTIONS INHERITED FROM PARENT COMMANDS 🧚

these aren't even yours, they're the family hand-me-downs from the parent commands, but they're still iconic and they apply 🔥

• --additional-urls=[] — a comma-separated list of additional URLs for the Boards Manager. yes comma-separated, separate them, don't just dump them all in one blob bestie 😭 default is the empty list [].
• --config-dir="" — sets the default data directory. (Arduino CLI will look for the configuration file in this directory.) default is "", so if you say nothing it does its own thing 🫶
• --config-file="" — the custom config file. if you don't specify it, the default one gets used. default: "" ⭐
• --json[=false] — print the output in JSON format. defaults to false, which is giving very human-readable of it 🌈
• --log[=false] — print the logs on the standard output. defaults to false.
• --log-file="" — the path to the file where logs will be written. default "".
• --log-format="text" — the output format for the logs. the options are: text, json. default is text 💜
• --log-level="info" — messages with this level and above will be logged. valid levels are: trace, debug, info, warn, error, fatal, panic. default is info. that's the whole ladder, top to bottom, no skipping 🍓
• --no-color[=false] — disable colored output. default false, because color is a lifestyle 🎀

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🌈 EXAMPLE 🌈

here's the actual vibe, copy-paste ready, exactly as it is:

debian/build/bin/arduino-cli core update-index

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💖 SEE ALSO 💖

• arduino-cli-core(1)

go read that one next, it's the main character of this whole friend group 👑

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📜 HISTORY 📜

• 15-Aug-2026 — auto generated by spf13/cobra. not me being a whole cobra-generated page, the automation ate and left no crumbs 💀

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lowkey important reminder: everything here was spit out by spf13/cobra — fully auto generated, so don't come for me about the wording, I'm just the messenger 🫶

and that's the page bestie, ily, go update that index ✨

Auto generated by spf13/cobra · Aug 2026 · ARDUINO COMMAND LINE MANUAL(1) 💅