1131  read(0, "e", 1)            = 1
1131  write(1, "e", 1) = 1
1131  read(0, "x", 1)            = 1
1131  write(1, "x", 1) = 1
1131  read(0, "i", 1)            = 1
1131  write(1, "i", 1) = 1
1131  read(0, "t", 1)            = 1
1131  write(1, "t", 1) = 1
1131  read(0, "\n", 1)          = 1
1131  write(1, "\n", 1) = 1
1131  ioctl(0, TIOCSCTTY, {B38400 opost isig icanon echo ...}) = 0
1131  ioctl(0, TIOCNXCL, {B38400 opost isig icanon echo ...}) = 0
1131  rt_sigaction(SIGWINCH, {0x10000000, [], 0}, {0x10000000, [], SA_SIGINFO|SA_NOCLDWAIT|0x46ab70}, 16) = 0
1131  ioctl(10, 0x80047476, 0x7fc9296c) = 0
1131  setpgid(0, 1131)                  = -1 EPERM (Operation not permitted)
1131  close(10)                         = 0
1131  exit(0)                           = ?