'Idle message + counter in linux
I would like to write a bash script that is a "watcher program", which means, that it is running in the background and verifies certain stuff.
My program should check for a list of users (given in a textfile, the textile's name is given as a parameter), and if the users are idle for more than 1 minute, it should send them a message with the number of minutes they have been idle for.
Example:
User asdf has been idle for 1 min:
message: You have been idle for 1 min
User asdf continues being idle, 2 minutes pass:
message: You have been idle for 2 min
... User asdf has been idle for n minutes:
message: You have been idle for n min
Users that are not online, but listed in the textfile should not be considered at all.
How should I do this process? How do I check if a user is idle? how do I write them a message only once? (not everytime the loop starts again)
Sources
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