<sect2><title> </title><para> </para></sect2> <sect2><title>Short descriptions</title> <para><command>fuser</command> reports the PIDs of processes that use the given files or filesystems.</para> <para><command>killall</command> kills processes by name. It sends a signal to all processes running any of the given commands.</para> <para><command>pidof</command> reports the PIDs of the given programs. (Not this pidof program is used, however, but the one from Sysvinit.)</para> <para><command>pstree</command> displays running processes as a tree.</para> </sect2>