killall(1) - kill processes by name
-e, --exact
       Require  an  exact  match for very long names. If a command name is longer than 15 characters, the
       full name may be unavailable (i.e. it is swapped out). In this case, killall will kill  everything
       that  matches within the first 15 characters. With -e, such entries are skipped.  killall prints a
       message for each skipped entry if -v is specified in addition to -e,
-I, --ignore-case
       Do case insensitive process name match.
-g, --process-group
       Kill the process group to which the process belongs. The kill signal is only sent once per  group,
       even if multiple processes belonging to the same process group were found.
-i, --interactive
       Interactively ask for confirmation before killing.
-l, --list
       List all known signal names.
-o, --older-than
       Match only processes that are older (started before) the time specified.  The time is specified as
       a float then a unit. The units are s,m,h,d,w,M,y for seconds, minutes, hours, days, weeks,  Months
       and years respectively.
-q, --quiet
       Do not complain if no processes were killed.
-r, --regexp
       Interpret process name pattern as an extended regular expression.
-s, --signal
       Send this signal instead of SIGTERM.
-u, --user
       Kill only processes the specified user owns. Command names are optional.
-v, --verbose
       Report if the signal was successfully sent.
-V, --version
       Display version information.
-w, --wait
       Wait  for  all  killed  processes  to  die.  killall  checks  once per second if any of the killed
       processes still exist and only returns if none are left.  Note that killall may  wait  forever  if
       the signal was ignored, had no effect, or if the process stays in zombie state.
-y, --younger-than
       Match  only  processes that are younger (started after) the time specified.  The time is specified
       as a float then a unit. The units are s,m,h,d,w,M,y for  seconds,  minutes,  hours,  days,  weeks,
       Months and years respectively.
-Z, --context
       (SELinux  Only)  Specify  security context: kill only processes having security context that match
       with given expended regular expression pattern. Must precede other arguments on the command  line.
       Command names are optional.