Signal handling

The following signals are caught by FMLI:

SIGABRT *	SIGIOT *	SIGTSTP
SIGALRM	SIGINT *	SIGTTIN
SIGBUS	SIGPIPE *	SIGTTOU
SIGEMT	SIGQUIT *	SIGUSR1
SIGFPE	SIGSEGV	SIGUSR2
SIGHUP *	SIGSYS	SIGXCPU
SIGILL	SIGTERM *	SIGXFSZ

Those signals marked by an asterisk (*) are only caught if the application that invokes FMLI has not caused them to be ignored. If an FMLI application is terminated by a signal, the terminal stty(1) settings will be reset and the message ``progname terminated by signal: description'' will be printed, where progname is the basename of the executable invoked to run the application and description is the string provided by psignal(3C). Not all of the signals listed above cause an application to terminate. These normally will not--SIGALRM, SIGINT, SIGTSTP, SIGTTIN, SIGTTOU, SIGUSR1, and SIGUSR2--although they can indirectly cause an FMLI application to terminate. For example, SIGUSR2, which is generated by the vsig command, could cause the application to execute the exit command. See the intro(2) manual page for a complete discussion of signals.