BLAEU(1)

💖 BLAEU — Display the PKIX certificate 💖

okay bestie, sit DOWN, because we're about to talk about Blaeu, and it's literally the cutest little command for looking at PKIX certificates and it deserves main character energy. 🎀

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✨ SYNOPSIS ✨

blaeu-cert target-name-or-IP

that's it. that's the whole vibe. you hand it a target-name-or-IP and it does its thing. 🦋

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🌸 DESCRIPTION 🌸

💅 General options are:

• --verbose or -v — makes the program more talkative. it's giving yapper mode, honestly. 🗣️
• --help or -h — this message. hi, this is the message. 🫶
• --displayprobes or -o — display the probes numbers. WARNING: big lists 😭 like genuinely huge, don't say I didn't warn you.
• --displayprobeasns — display the (unique) probe ASNumbers. lowkey niche: currently only for blaeu-resolve. ✨
• --cache-probes=<file.json> — cache probe data, so you're not out here re-fetching like a fool. 💾
• --country=2LETTERSCODE or -c 2LETTERSCODE — limits the measurements to one country (default is world-wide). it's giving passport check 🛂
• --area=AREACODE or -a AREACODE — limits the measurements to one area such as North-Central (default is world-wide). 🌍
• --asn=ASnumber or -n ASnumber — limits the measurements to one AS (default is all ASes). one AS only, periodt. 👑
• --prefix=IPprefix or -f IPprefix — limits the measurements to one IP prefix (default is all prefixes). WARNING: it must be an exact prefix in the global routing table — exact exact, no approximations bestie, I'm serious. 💀
• --probes=N or -s N — selects the probes by giving explicit ID (one ID or a comma-separated list). pick your faves. 🎀
• --requested=N or -r N — requests N probes (default is 5). five is the standard slay. 🖐️
• --percentage=X or -p X — stops the program as soon as X % of the probes reported a result (default is 90 %). impatient icon behavior, we love it. ⏱️
• --measurement-ID=N or -m N — do not start a measurement, just analyze a former one. retro vibes, analyzing the past 📼
• --old-measurement MSMID or -g MSMID — uses the probes of measurement MSMID. recycling probes, sustainable queen ♻️
• --include TAGS or -i TAGS — limits the measurements to probes with these tags (a comma-separated list). inclusivity 💖
• --exclude TAGS or -e TAGS — excludes from measurements the probes with these tags (a comma-separated list). not you, bye 👋
• --port=N or -t N — destination port for TCP (default is 443). the classic. 🔒
• --size=N or -z N — number of bytes in the packet (default is 64 bytes). smol but mighty. 🍓
• --ipv4 or -4 — uses IPv4 (default is IPv6, except if the parameter or option is an IP address, then it is automatically found). it just knows. 🔮
• --tags TAGS — tag the measurement (no relationship with probes tags) (a comma-separated list). yes bestie this is a DIFFERENT tags, don't get it twisted 🏷️
• --spread or -w — spreads the tests (add a delay before the tests). taking your time, no rush, self-care 💆
• --private — makes the measurement private. 🤫 nobody has to know
• --resolve-on-probe — resolve names with the probe's DNS resolver. let the probe handle it, delegating is a skill ✨
• --machine-readable or -b — machine-readable output, to be consumed by tools like grep or cut. for when the robots need to read it 🤖

🦋 Also:

• --issuer or -I — displays the issuer (default is to display the name). 💌
• --key or -k — displays the public key (default is to display the name). 🔑
• --serial or -S — displays the serial number (default is to display the name). #️⃣
• --expiration or -E — displays the expiration datetime (default is to display the name). ticking clock energy ⏰
• --entire-chain — displays all the certificates (default is to display the first). the whole family tree, no gatekeeping 🌳
• --hostname — hostname to send for SNI (default is to use the target). 🏠
• --no-sni — do not send the SNI (Server Name Indication) (default is to send it). shy mode activated 🙈

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🌈 SEE ALSO 🌈

The full documentation for Blaeu is maintained as a Texinfo manual. If the info and Blaeu programs are properly installed at your site, the command

info Blaeu

should give you access to the complete manual. go read it bestie, it's the director's cut 💜

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and that's the whole page, you ate it, no crumbs. 💅

Blaeu version 2.1.1 — October 2024 🎀✨ bye ily, go check some certs 🦋