root@localhost tests]# ps fauxww | grep -P [pt]t[ys]
root      2604  2.3  0.8  50728 34576 tty1     Ss+  07:09   1:15      _ /usr/bin/Xorg :0 -br -verbose -audit 4 -auth /var/run/gdm/auth-for-gdm-VRHaoJ/database -nolisten tcp vt1
root      2569  0.0  0.0   2008   500 tty2     Ss+  07:09   0:00 /sbin/mingetty /dev/tty2
root      2571  0.0  0.0   2008   500 tty3     Ss+  07:09   0:00 /sbin/mingetty /dev/tty3
root      2573  0.0  0.0   2008   504 tty4     Ss+  07:09   0:00 /sbin/mingetty /dev/tty4
root      2575  0.0  0.0   2008   500 tty5     Ss+  07:09   0:00 /sbin/mingetty /dev/tty5
root      2577  0.0  0.0   2008   504 tty6     Ss+  07:09   0:00 /sbin/mingetty /dev/tty6
sin       3374  0.2  0.7  90668 28564 ?        Sl   07:13   0:09 /usr/bin/python /usr/bin/terminator   <<< Added this parent of 3377 manually to see the pts source
sin       3377  0.0  0.0   2076   620 ?        S    07:13   0:00  _ gnome-pty-helper
sin       3378  0.0  0.0   5236  1712 pts/0    Ss   07:13   0:00  _ /bin/bash
root      4054  0.0  0.0   5124  1676 pts/0    S    07:23   0:00  |       _ bash
root      5034  0.0  0.0   5056  1092 pts/0    R+   08:03   0:00  |           _ ps fauxww
root      5035  0.0  0.0   4416   740 pts/0    S+   08:03   0:00  |           _ grep -P [pt]t[ys]
sin       4154  0.0  0.0   5236  1708 pts/1    Ss   07:23   0:00  _ /bin/bash
sin       4485  0.0  0.0   7252  3500 pts/1    S+   07:41   0:00      _ python

[root@localhost tests]# ps fauxww | grep terminator
sin       3374  0.2  0.7  90668 28564 ?        Sl   07:13   0:08 /usr/bin/python /usr/bin/terminator
[root@localhost tests]# lsof -p 3374 | grep '[pt]t[ys]'
/usr/bin/ 3374  sin   17u   CHR      136,0      0t0      3 /dev/pts/0
/usr/bin/ 3374  sin   25u   CHR      136,1      0t0      4 /dev/pts/1