CANPLAYER(1)

✨ CANPLAYER ✨

okay bestie, grab your iced coffee because we're talking about the canplayer manual page 💅 — that's the User Commands one, CANPLAYER(1), iykyk.

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🎀 NAME 🎀

canplayer — the manual page for canplayer 2023.03-1build1, periodt 💖

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🌸 SYNOPSIS 🌸

canplayer <options> [interface assignment]*

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🦋 DESCRIPTION 🦋

so canplayer replays a compact CAN frame logfile to your CAN devices. that's it, that's the whole vibe — it takes your little logfile and goes boom, frames, everywhere 🫶

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💅 OPTIONS 💅

okay here's the full menu, no skipping, I would NEVER gatekeep ✨

• -I <infile> — read from this input file, obvs. (default: stdin, so if you don't say anything it's just sitting there listening 🎧)
• -l <num> — process the input file <num> times. use 'i' if you want an infinite loop, bestie, go off queen 👑 (default: 1)
• -t — ignore timestamps and just send frames immediately. no waiting, main character energy 💅
• -i — interactive mode: it waits for you to press the ENTER key before it processes the next frame. so dramatic, I love it 🙈
• -n <count> — terminate after processing <count> CAN frames. a little limit, as a treat.
• -g <ms> — the gap, in milli seconds. (default: 1 ms) that's the pause between frames, the breathe moment 🍓
• -s <s> — skip gaps in timestamps that are > 's' seconds. bye bye dead air 👋
• -x — disable local loopback of sent CAN frames. no echo, we said what we said 💀
• -v — verbose: print out the CAN frames it sends, so you can literally watch it work. she's transparent ✨

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🔥 Interface assignment 🔥

this is the part where you tell her who goes where — you can have 0..n assignments that look like <write-if>=<log-if>:

• e.g. vcan2=can0 — this sends the frames it received from can0 on vcan2. so can0 was the source, vcan2 is where it's headed 🛫
• extra hook: stdout=can0 — this prints the logfile line marked with can0 on stdout. cute little extra 🎀
• No assignments at all? totally fine, it will just send frames to the interface(s) they had originally been received from. home is where the interface is 🏠
• Lines in the logfile that don't begin with '(' (that's the start of a timestamp, for the uninitiated) are ignored. not it, not happening, moving on 🙅

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💖 friendly reminder bestie — getting your interface assignments wrong means your frames are going on a little trip to nowhere. double check those <write-if>=<log-if> pairs, okay? mwah 😭

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and that's the whole thing, you ate that 🍽️ this was canplayer 2023.03-1build1, from December 2025 — love her, stan her, go replay some frames 💜🌈