SIGHUP           6640 src/simh/scp.c # if defined(SIGHUP)
SIGHUP           6641 src/simh/scp.c if (signal (SIGHUP, int_handler) == SIG_ERR) {          /* set WRU */
SIGHUP           6713 src/simh/scp.c #if defined(SIGHUP)
SIGHUP           6714 src/simh/scp.c signal (SIGHUP, SIG_DFL);                               /* cancel WRU */