使用名称启动进程

Basically I want to dynamically start some processes which may create their own children processes, also I want to kill a certain group of processes I just created whenever I want. One way I could think of is to start processes with a name(to distinguish as a group), then use pkill to kill them by the name. The question is how to start a process with a name so that I can use pkill to kill them by the name? I am open to other solutions as well.Basically I want to dynamically start some proc