pv:tldr:eeea2
pv: Attach to an already running process and see its file reading progress.
$ pv -d ${PID}
try on your machine
The command "pv -d ${PID}" consists of two parts:
-
"pv" is the command for Pipe Viewer, a utility that allows the monitoring of data passing through a pipeline. It can track the progress of data transfer, display transfer rates, and provide an estimate of completion time.
-
"${PID}" is a placeholder for the Process ID (PID) of a running process. The value of the PID will be substituted in place of "${PID}" when the command is executed.
So, when you run "pv -d ${PID}", you are essentially instructing the Pipe Viewer utility to monitor the data transfer or progress of a specific process identified by its PID. The specific details of what the command does will depend on the context and the process associated with the given PID.
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.