This file is indexed.

/etc/snooptab is in ttysnoop 0.12d-6+b1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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# /etc/snooptab
#
# these display directly on the specified tty.. no client necessary
#
# tty		snoopdev	type	execpgm
#
#ttyS1		/dev/tty7	login	/bin/login
#ttyS2		/dev/tty8	login	/bin/login
#
#
# the 'socket' snoop-device is for use with the ttysnoop client (any tty not
# listed above will match the wildcard)
#
*		socket		login	/bin/login
#
# remember to inform your incoming daemons that /usr/sbin/ttysnoops is 
# the login program
#
# example:  (for /etc/inetd.conf)
# telnet stream tcp nowait root /usr/sbin/tcpd /usr/sbin/in.telnetd -L /usr/sbin/ttysnoops
#
# example /etc/inittab (using agetty):
# s2:23:respawn:/sbin/getty 38400 ttyS2 vt100 -l /usr/sbin/ttysnoops
#
# or, if you're using mgetty:   (/etc/mgetty/login.config) replace:
# *	  -       -       /bin/login	@
# with:
# *       -       -       /usr/sbin/ttysnoops @