I’m trying to make a simple and reliable script, preferably in bash, that is executed every minute using crontab. The script simply has to read the contents of the last couple of lines of an open screen and store them as a var so that I can search for a sub-string. Does anyone know of an easy way to do this, thanks.
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Answer
You can send the hardcopy command to the screen and read the last line using the tail command:
screen -X hardcopy "~/test.log" tail -n1 ~/test.log