pkill:tldr:9b042

The command "pkill -USR1 "${process_name}"" is used to send the USR1 signal to a specific process identified by its name.

Here is a breakdown of the command:

• "pkill" is the command used to send signals to processes based on their name.
• "-USR1" is an option that specifies the signal to be sent. In this case, it refers to the USR1 signal, which is a user-defined signal that can be used for various purposes.
• "${process_name}" is a placeholder that should be replaced with the actual name of the process to which the signal needs to be sent. It could be the name of a running program or command.

When this command is executed, it will search for the process with the name "${process_name}" and send the USR1 signal to it. The effect of this signal will depend on how the process has been programmed to handle it.