Z:englobe-dpkg-man--c5b306-Checks for the existence of a/es

Checks for the existence of a specified process. If such a process exists, B sends it the signal specified by B<--signal>, and exits with error status 0. If such a process does not exist, B exits with error status 1 (0 if B<--oknodo> is specified). If B<--retry> is specified then B will check that the process(es) have terminated.