watch – runs a program periodically, displaying the output in full screen. watch runs the command repeatedly, displaying its output and errors (the first full screen). This allows you to watch the program's output change over time
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1. watch command -: The watch command in Linux is used to run a program periodically, displaying the output in full screen. This command will execute the command specified in the argument repeatedly displaying its output and errors
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watch- command options:
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-d -: This option highlights the differences between successive updates
-n -: This option will specify the update interval
-p -: This option allows the watch to attempt to execute the command every second interval
-t -: No title on watch screen
-g -: exits the monitoring screen if the output is modified
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look at sample commands:
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watch -e date
watch -n 5 date
watch -g date
watch -d date
watch -p date
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