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free:tldr:cd445
free: Refresh the output every 2 seconds.
$ free -s ${2}
try on your machine
The command "free -s ${2}" is used to display the amount of free and used memory in the system, with the option to specify the sampling interval.
Here's a breakdown of the different components:
- "free" is the command used to obtain memory related information in Linux systems.
- "-s" is an option flag that allows you to specify the sampling interval. This determines how often the memory usage statistics will be updated and displayed.
- "${2}" is a placeholder for the second command line argument passed to the script or command. It is likely a parameter that represents the desired sampling interval provided by the user.
In summary, this command will display memory usage statistics at a specified interval, as determined by the value provided as the second command line argument.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.