TLDR
Enter a command. For example: espeak, adb install, salt key.

entr

 
Run arbitrary commands when files change. More information: https://manned.org/entr.
 
  • Rebuild with make if any file in any subdirectory changes:
     
    {{ag -l}} | entr {{make}}
     
  • Rebuild and test with make if any .c source files in the current directory change:
     
    {{ls *.c}} | entr {{'make && make test'}}
     
  • Send a SIGTERM to any previously spawned ruby subprocesses before executing ruby main.rb:
     
    {{ls *.rb}} | entr -r {{ruby main.rb}}
     
  • Run a command with the changed file (/_) as an argument:
     
    {{ls *.sql}} | entr {{psql -f}} /_

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