ISOTPSNIFFER(1)

💖 NAME 💖

isotpsniffer — bestie, this is the manual page for isotpsniffer version 2023.03-1build1. She sniffs ISO-TP traffic for you and she does it flawlessly. ✨

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🌸 SYNOPSIS 🌸

isotpsniffer [options] <CAN interface>

Yep. That's the whole vibe. Options, then the CAN interface, periodt. 🎀

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✨ OPTIONS ✨

• -s <can_id> — set the source can_id. Heads up bestie: use 8 digits for extended IDs or it's giving incomplete. 😭
• -d <can_id> — set the destination can_id. Same rule, same energy: 8 digits for extended IDs. 💅
• -x <addr> — extended addressing mode. She's extra now. 🦋
• -X <addr> — extended addressing mode, but make it the rx addr. The X is for eXtra, iykyk. 👑
• -c — color mode!! 🌈 Everything is prettier in color, no cap.
• -t <type> — timestamp vibes, pick your flavor:
  • (a) absolute
  • (d) delta
  • (z) zero
  • (A) absolute w date

(capital A really said "and also tell me the date" 💀)

• -f <format> — pick how the bytes get presented:
  • 1 = HEX
  • 2 = ASCII
  • 3 = HEX & ASCII — and this is the default: 3, because of course it is, she ate. 🔥
• -L <mtu>:<tx_dl>:<tx_flags> — link layer options for CAN FD. Three little values, colon-separated, very demure. 🫶
• -h <len> — head mode: print only the first <len> bytes. Like a teaser trailer but for packets. 🌸

Reminder bestie: CAN IDs and addresses are given and expected in hexadecimal values. That's not a suggestion, that's just how it is. 💜

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Anyway, that's the whole page — isotpsniffer 2023.03-1build1, sniffing since forever and shipped to you in December 2025. Go forth and decode, main character. 💖✨🎀🦋