FDSWAP(1)

💖 FDSWAP(1) 💖

okay so bestie, welcome to the General Commands Manual corner of the group chat. today’s main character is fdswap, and her whole thing is literally: swap two file descriptors, then execute a program. no cap. 👑

✨ NAME ✨

fdswap — swap two file descriptors, then execute a program 💅

📜 SYNOPSIS 📜

fdswap fd1 fd2 prog...

🦋 DESCRIPTION 🦋

okay so here’s the tea: fdswap swaps the file descriptors numbered fd1 and fd2, and then it exec(3)s into prog with its arguments. that’s the move. 🫶

so like, you hand it two fd numbers, it swaps them, then it becomes prog and passes along its arguments. very “trade seats and then leave the party” energy, ngl. ✨

⚠️ bestie, important: fdswap has no portable shell equivalent. like, fr fr, you can’t just recreate this portably in shell and pretend it’s the same vibe. 💀

👑 SEE ALSO 👑

the whole friend group is here, iykyk:

• emptyenv(1)
• envfile(1)
• exec(1)
• execline-cd(1)
• execline-umask(1)
• exit(1)
• export(1)
• fdblock(1)
• fdclose(1)
• fdmove(1)
• fdreserve(1)
• getcwd(1)
• getpid(1)
• heredoc(1)
• piperw(1)
• posix-cd(1)
• posix-umask(1)
• redirfd(1)
• trap(1)
• tryexec(1)
• unexport(1)
• wait(1)
• withstdinas(1)
• exec(3)

this man page is ported from the authoritative documentation at: https://skarnet.org/software/execline/fdswap.html 🌈

🎀 AUTHORS 🎀

credit where credit is due, bestie:

• Laurent Bercot
• Alexis <flexibeast@gmail.com> (man page port)

mwah 💋 — source/version Debian, dated February 14, 2021, page FDSWAP(1), and that’s the whole footer vibe check. 🫶🎀