under TC-4.2.1 under x
sometimes when run many things
ctrl+alt+del stop working
even if all GUI's close it do not work
so is this command to exit Xvesa server good
#################
kill `ps | grep Xvesa | cut -f 1 -d " "`
#################
or it can damage something
which command is executed under x
and under text mode if ctrl+alt+del is hit