s3270(1)

💖 s3270(1) — IBM host access tool 💖

okay bestie, so this is a page from the General Commands Manual, and the star of the show is s3270 — literally the moment your scripts get to drive an IBM host around like it's main character energy 🎀

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✨ NAME ✨

s3270 — IBM host access tool 🦋

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🌸 SYNOPSIS 🌸

s3270 [options] [host]
s3270 [options] session-file.s3270

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💅 DESCRIPTION 💅

so s3270 opens a telnet connection to an IBM host, and then — this is the iconic part — it lets a script control the host login session 👑 no cap, your script is the one steering.

it's derived from x3270(1), which is an X-windows IBM 3270 emulator, so think of this as the scriptable glow-up of that whole situation 💁‍♀️

it implements RFCs 2355 (TN3270E), 1576 (TN3270) and 1646 (LU name selection) — yes, all three, she's thorough — and it supports IND$FILE file transfer 🔥

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🧚 WIKI 🧚

the primary documentation for s3270 lives on the x3270 Wiki, at:

https://x3270.miraheze.org/wiki/Main_Page

go read it, iykyk 📖✨

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⭐ VERSION ⭐

s3270 4.5ga5 💜

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🌈 that's the whole page bestie, every little detail accounted for, nothing skipped, periodt.

signed off with love — this page is from source/version 4.5ga5, dated 22 December 2025, and it's the s3270(1) manual page 🫶💖