> > > >well do they (i.e. ps -axl) ? > >john > Looks like it to me During running 000 0 1122 1082 9 0 2356 1016 wait4 S tty1 0:00 su 100 0 1123 1122 9 0 2572 1388 wait4 S tty1 0:00 bash 000 0 1155 1123 9 0 18288 656 nanosl S tty1 0:00 ./test626 040 0 1156 1155 9 0 18288 656 do_pol S tty1 0:00 ./test626 040 0 1157 1156 9 0 18288 656 end S tty1 0:00 ./test626 040 0 1158 1156 9 0 18288 656 end S tty1 0:00 ./test626 100 500 1159 1064 9 0 2496 1328 wait4 S tty2 0:00 -bash Immediately after ctrl-c 000 0 1122 1082 9 0 2356 1016 wait4 S tty1 0:00 su 100 0 1123 1122 0 0 2572 1388 read_c S tty1 0:00 bash 100 500 1159 1064 9 0 2496 1328 wait4 S tty2 0:00 -bash There is the main process, the two threads and what..a thread manager? I don't know what all the columns are, if you see something unusual, please let me know. Thanks for showing me how to list the processes. -- Best regards, David Stroupe Keyed-Up Software 5307 Faireast Court Arlington, Texas 76018-1683 817/557-4903 voice 817/472-0408 fax -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/