WLOCK(1)

👑 WLOCK 👑

okay bestie, gather round, because today we're talking about wlock — the lil sysadmin tool from the System Administration chapter of the manual that does write-locks on files, the POSIX fcntl() kind. She's small, she's mighty, she tests or sets a file with POSIX-fcntl() write-locks, and honestly? iconic. 🎀

✨ NAME ✨

wlock — Tests or sets a file with POSIX-fcntl() write-locks 💖

🦋 SYNOPSIS 🦋

wlock [ -s [-a seconds ]] [ -t] [ -v] [ -b begin ] [ -l length ] file
or
wlock [ -s ] [ -v] [ -b begin ] [ -l length ] file program [ arguments ]

🌸 DESCRIPTION 🌸

So basically, this program sets or tests advisory locks that conform to the POSIX fcntl() call. That's the whole vibe. ✨

And if you want, you can optionally hand her a program to run, and she'll start it up within the lock context — like, the program gets launched while the lock is held. no cap, that's the main character energy right there. 👑

💅 OPTIONS 💅

These options are accepted. And heads up bestie: if a program is provided as argument, wlock will start it. 🫶

• -s — Sets the lock. 💖
• -t — Test the lock (this is the default, so if you say nothing, you're testing). 🔍
• -v — Verbose output. She will talk to you. 🗣️✨
• -b begin — The lock starts at byte #begin. 📍
• -l length — The lock will be length bytes long. 📏
• -a seconds — The lock is active for seconds (default=86400). ⏰

🔥 RETURN VALUES 🔥

• 0 — In test mode this means that the file is locked. In set mode it indicates the succesful creation of the lockfile. ✅
• 1 — The file is not locked. Only available in testmode. 🙈
• 2 — Some error has occurred. 💀

🎀 AUTHOR 🎀

wlock has been written by Ulli Horlacher (framstag@belwue.de>). give her her flowers 💐

🌈 SEE ALSO 🌈

• sendfile(1).

mwah — this little page is from 19 March 1998, manual section WLOCK(1), and that's the whole vibe check. go lock a file, bestie, you got this. 💜🦋⭐