top:tldr:582dd
The command "top -o ${field_name}" is used to start the 'top' command in a Linux or Unix-based operating system, with a sorting order specified by the variable "${field_name}".
Here's a breakdown of the command:
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"top": This is the command itself, which is commonly used to monitor and display real-time system statistics such as CPU usage, memory usage, running processes, etc.
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"-o": It's an option/flag in the 'top' command that specifies the field to be used for sorting the displayed data. The "-o" flag is followed by the field name.
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"${field_name}": This is a placeholder for the name of the field you want to sort the processes by. You need to replace "${field_name}" with the actual name of the field you want to use for sorting. For example, if you want to sort by CPU usage, you would replace "${field_name}" with "cpu".
When you execute the command, 'top' will start running and constantly update the displayed system statistics. The output will be sorted based on the field specified after the "-o" option.