Killing several processes
Try using the pkill command:
pkill --full /usr/lib/R/bin/exec/R
From the pkill man page:
pkill will send the specified signal (by default SIGTERM) to each process. [...] -f, --full The pattern is normally only matched against the process name. When -f is set, the full command line is used.
Try this command,
ps aux | awk '/\/usr\/lib\/R\/exec\/R/ {print $2}' | xargs kill
OR
pa aux | awk '/\/usr\/lib\/R\/bin\/exec\/R/ {print $2}' | xargs kill
You can use :
ps -ef| awk '/\/usr\/lib\/R\/bin\/exec\/R/ {print $2}' |xargs kill -9