SIGHUP           6573 src/simh/scp.c # if defined(SIGHUP)
SIGHUP           6574 src/simh/scp.c if (signal (SIGHUP, int_handler) == SIG_ERR) {          /* set WRU */
SIGHUP           6646 src/simh/scp.c #if defined(SIGHUP)
SIGHUP           6647 src/simh/scp.c signal (SIGHUP, SIG_DFL);                               /* cancel WRU */