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...09:23:10 UTC 2012 root at farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64 # stty -f /dev/cuau0.init raw 4800 # stty -f /dev/cuau0.init -a speed 4800 baud; 0 rows; 0 columns; lflags: -icanon -isig -iexten -echo -echoe -echok echoke -echonl echoctl -echoprt -altwerase -noflsh -tostop -flusho -pendin -nokerninfo -extproc iflags: -istrip -icrnl -inlcr -igncr -ixon -ixoff ixany -imaxbel ignbrk -brkint -inpck -ignpar -parmrk oflags: -opost onlcr -ocrnl tab0 -onocr -onlret cflags: cread cs8 -parenb -parodd hupcl -clocal -cstopb -crtscts -dsrflow -dtrflow -mdmbuf cchars: discard = ^O; dsu...

I setup a ssh chroot jail following this[1] guide. It works for my user to login, use ls and use scp which is all I really want. I do have a problem I cannot solve: when connected and navigating the filesystem, the backspace key actually moves the cursor forward and does not delete what I type. I may have found a hint from some googling that readline will read in /etc/inputrc on login but if

...n stty -f /dev/cuaU0 raw jusbefore running solis 2) Unplug/plug, and run solis right after. The problem still persists. [~]>stty -a -f /dev/cuaU0 speed 9600 baud; 0 rows; 0 columns; lflags: icanon isig iexten echo echoe -echok echoke -echonl echoctl -echoprt -altwerase -noflsh -tostop -flusho -pendin -nokerninfo -extproc iflags: -istrip icrnl -inlcr -igncr ixon -ixoff ixany imaxbel -ignbrk brkint -inpck -ignpar -parmrk oflags: opost onlcr -ocrnl tab0 -onocr -onlret cflags: cread cs8 -parenb -parodd hupcl clocal -cstopb -crtscts -dsrflow -dtrflow -mdmbuf cchars: d...

..._); } if (tcgetattr(dev->fd, &t) >= 0) { t.c_ispeed = dev->speed; t.c_ospeed = dev->speed; t.c_lflag &= ~(ICANON | ISIG | IEXTEN | ECHO | ECHOE | ECHOK | ECHOKE | ECHONL | ECHOCTL | ECHOPRT | ALTWERASE | NOFLSH | TOSTOP | FLUSHO | PENDIN | NOKERNINFO | EXTPROC); t.c_iflag &= ~(ISTRIP | ICRNL | INLCR | IGNCR | IXON | IXOFF | IXANY | IMAXBEL | IGNBRK | BRKINT | INPCK | IGNPAR | PARM RK); t.c_oflag &= ~(OPOST | ONLCR | OCRNL | OXTABS | ONOEOT | ONOCR | ONLRET); t.c_cflag &=...

...^r; flush = ^o; werase = ^w; lnext = ^v; -parenb -parodd cs8 -cstopb hupcl cread -clocal -loblk -parext -ignbrk brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl -iuclc ixon -ixany -ixoff -imaxbel isig icanon -xcase echo echoe echok -echonl -noflsh -tostop echoctl -echoprt echoke -defecho -flusho -pendin iexten opost -olcuc onlcr -ocrnl -onocr -onlret -ofill -ofdel tab3 I have confirmed that these same problems occur when the client is OpenSSH v3.1p1 on a Linux machine, so it is not related to the SecureCRT client - it is definitely the way the OpenSSH code compiles/runs on the NCR MP-RA...

..., line 299: macro NOFLSH redefines previous macro at "/usr/ucbinclude/sys/ioctl.h", line 126 "/usr/include/sys/termios.h", line 300: macro TOSTOP redefines previous macro at "/usr/ucbinclude/sys/ioctl.h", line 117 "/usr/include/sys/termios.h", line 307: macro FLUSHO redefines previous macro at "/usr/ucbinclude/sys/ioctl.h", line 118 "/usr/include/sys/termios.h", line 308: macro PENDIN redefines previous macro at "/usr/ucbinclude/sys/ioctl.h", line 124 "/usr/include/sys/unistd.h", line 232: macro _PC_LAST redefines previo...

...efinition /usr/local/lib/gcc-lib/sparc-sun-sunos4.1.3_U1/2.95.3/include/sys/termios.h:174: warning: `TOSTOP' redefined /usr/include/sys/ioctl.h:57: warning: this is the location of the previous definition /usr/local/lib/gcc-lib/sparc-sun-sunos4.1.3_U1/2.95.3/include/sys/termios.h:189: warning: `FLUSHO' redefined /usr/include/sys/ioctl.h:58: warning: this is the location of the previous definition /usr/local/lib/gcc-lib/sparc-sun-sunos4.1.3_U1/2.95.3/include/sys/termios.h:190: warning: `PENDIN' redefined /usr/include/sys/ioctl.h:64: warning: this is the location of the previous definition...

...ad -clocal -crtscts -ignbrk -brkint -ignpar -parmrk -inpck -istrip -inlcr -igncr icrnl ixon -ixoff -iuclc -ixany -imaxbel iutf8 opost -olcuc -ocrnl onlcr -onocr -onlret -ofill -ofdel nl0 cr0 tab0 bs0 vt0 ff0 isig icanon iexten echo echoe echok -echonl -noflsh -xcase -tostop -echoprt echoctl echoke -flusho -extproc This will prevent QUIT to be signalled when pressing Ctrl+\ and thereby R (Python, ...) won't core dump. One can of course still use kill -s QUIT <pid>. To reset the above, either restart the terminal or use either of: $ stty quit ^\\ ## caret notation (espaced ^\) $ stty...

Turns out another user reported the same issue with a slightly different model: https://github.com/networkupstools/nut/issues/231 <https://github.com/networkupstools/nut/issues/231> The "stty -f /dev/cuaU0 raw" trick should help, but I am confused as to why FreeBSD has different "raw" settings than what is set up at the same time as the baud rate:

When running R from the terminal on Linux (Ubuntu 16.04), it core dumps whenever / wherever I press Ctrl-4 or Ctrl-\. You get thrown back to the terminal with "Quit (core dump)" being the only message. Grepping the R source code, it doesn't look like that message is generated by R itself. Over on Twitter, it has been confirmed to also happen on macOS. $ R -d valgrind --vanilla

..., line 299: macro NOFLSH redefines previous macro at "/usr/ucbinclude/sys/ioctl.h", line 126 "/usr/include/sys/termios.h", line 300: macro TOSTOP redefines previous macro at "/usr/ucbinclude/sys/ioctl.h", line 117 "/usr/include/sys/termios.h", line 307: macro FLUSHO redefines previous macro at "/usr/ucbinclude/sys/ioctl.h", line 118 "/usr/include/sys/termios.h", line 308: macro PENDIN redefines previous macro at "/usr/ucbinclude/sys/ioctl.h", line 124 "/usr/include/sys/unistd.h", line 232: macro _PC_LAST redefines previo...