Install Psmisc by running the following commands:
sed "s/-ltermcap/-lncurses/" Makefile | make -f - &&
make install
The Psmisc package contains the fuser, killall and pstree programs.
fuser displays the PIDs of processes using the specified files or file systems.
killall sends a signal to all processes running any of the specified commands.
pstree shows running processes as a tree.