Assertion: command's option | /r/HasProperty | obtained
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text: Thus, for example, to display memory utilization every two seconds, the following would be used: watch free This command can be made even more useful by using watch's -d (i.e., difference) option, which highlights changes in output, and its -n option followed by the number one to increase the frequency of reports to one per second as follows: watch -n 1 -d free More detailed information about total memory and current memory usage can be obtained by reading the proc/meminfo file directly.