Watchman: Execute a command when something changes

Post by jinnko » Wed, Oct 05, 2022, 8:39 PM UTC

Manu40 wrote: post #58

martincmartin wrote: post #39

Earlier quoted context omitted.

If you sign up for notifications on both github projects, you can watch the watchmen.

But then, who watches the watcher?

Post by damagednoob » Wed, Oct 05, 2022, 9:03 PM UTC

dec0dedab0de wrote: post #25

jitl wrote: post #3

Not to be confused with Facebook’s file watch daemon, also names watchman, which does the same sort of thing but is more complicated. There’s a bunch of tools that integrate Facebook’s watchman for more efficient change tracking. Advantages of Facebook’s watchman: 1. Implements efficient file system event watches on macOS and Windows 2. IPC/daemon system reduces resource use because overlapping watches/triggers don’t…

Also not to be confused with watchdog and it's command watchmedo, which is what I thought this was when I first read the headline. I don't know what the differences are, but I use watchdog to restart my local celery workers when I make changes. It's scripted out so I don't ever use the command directly. https://pypi.org/project/watchdog/ https://github.com/gorakhargosh/watchdog EDIT: Now I'm wondering how often I mis…

Post by chmaynard » Wed, Oct 05, 2022, 9:33 PM UTC

lloeki wrote: post #49

I've been using fswatch to great effect. The big advantage is that it's truly cross-platform, falling back to polling if no fs notification system is available as long as stat(2) works. Very composable as you just pipe its output to whatever you want (typically a while read do end), so exclusion is a awk/sed/perl/grep/rg away, and command can be as simple or complex as it needs to while the tool itself stays lean. Co…

Post by MengerSponge » Wed, Oct 05, 2022, 9:56 PM UTC

adhesive_wombat wrote: post #65

Manu40 wrote: post #58

Earlier quoted context omitted.

But then, who watches the watcher?

Microsoft, via the analytics on GitHub.

Post by bin_bash » Wed, Oct 05, 2022, 10:33 PM UTC

TheRealPomax wrote: post #79

bin_bash wrote: post #22

this project hasn't had a commit in 8 years and only has a handful of stars. It confusingly shares the name with a much more popular tool from Meta—though the use case is slightly different. There are other much more popular tools that do the same thing, like entr, watchexec, and nodemon. Why is this posted?

Small correction: watchman is a tool made and released by Facebook, not made and released by Meta. (yes, one owns the other, but Facebook employees writing and releasing code for Facebook are on Facebook's payroll, not Meta's payroll)