How to automatically run a command when directory updates?

• entr

  5 594 5.6 C

  A utility for running arbitrary commands when files change. Uses kqueue(2) or inotify(7) to avoid polling. entr responds to file system events by executing command line arguments or by writing to a FIFO. entr was written to provide to make rapid feedback and automated testing natural and completely ordinary. (by clibs)

  

entr is what I usually reach for when I want to monitor a directory or a list of files and then perform some action on them when changes occur

• watchexec

  20 4,948 9.1 Rust

  Executes commands in response to file modifications

  

I prefer watchexec as it's cross-platform.

• InfluxDB

  www.influxdata.com featured

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• entr

  47 4,062 6.8 C

  Run arbitrary commands when files change

FYI that project was last updated Dec 30, 2014. I would stick with the currently maintained repo from the original author.

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