Hey Binit!
Here is the output of sudo apt list | grep realsense
from both partitions (I personally use the Ubuntu 18.04 partition, the other is used by others in our group but I am willing to switch if necessary):
Ubuntu 18.04
Summary
kpputhuveetil@stretch-re1-1082:~$ sudo apt list | grep realsense
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
librealsense2/bionic,now 2.53.1-0~realsense0.8249 amd64 [installed,automatic]
librealsense2-dbg/bionic,now 2.53.1-0~realsense0.8249 amd64 [installed]
librealsense2-dev/bionic,now 2.53.1-0~realsense0.8249 amd64 [installed]
librealsense2-dkms/bionic,now 1.3.18-0ubuntu1 all [installed]
librealsense2-gl/bionic,now 2.53.1-0~realsense0.8249 amd64 [installed,automatic]
librealsense2-gl-dbg/bionic 2.53.1-0~realsense0.8249 amd64
librealsense2-gl-dev/bionic 2.53.1-0~realsense0.8249 amd64
librealsense2-net/bionic,now 2.53.1-0~realsense0.8249 amd64 [installed,automatic]
librealsense2-net-dbg/bionic 2.53.1-0~realsense0.8249 amd64
librealsense2-net-dev/bionic 2.53.1-0~realsense0.8249 amd64
librealsense2-udev-rules/bionic,now 2.53.1-0~realsense0.8249 amd64 [installed,automatic]
librealsense2-utils/bionic,now 2.53.1-0~realsense0.8249 amd64 [installed]
ros-melodic-librealsense2/bionic,now 2.50.0-1bionic.20211115.141014 amd64 [installed,automatic]
ros-melodic-librealsense2-dbgsym/bionic 2.50.0-1bionic.20211115.141014 amd64
ros-melodic-realsense2-camera/bionic,now 2.3.2-1bionic.20221025.193216 amd64 [installed]
ros-melodic-realsense2-camera-dbgsym/bionic 2.3.2-1bionic.20221025.193216 amd64
ros-melodic-realsense2-description/bionic,now 2.3.2-1bionic.20221025.185246 amd64 [installed]
Ubuntu 20.04
Summary
stretch-1082@stretch1082-NUC8i5BEH:~$ sudo apt list | grep realsense
[sudo] password for stretch-1082:
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
librealsense2-dbg/focal,now 2.50.0-0~realsense0.6128 amd64 [installed]
librealsense2-dev/focal,now 2.50.0-0~realsense0.6128 amd64 [installed]
librealsense2-dkms/focal,now 1.3.18-0ubuntu1 all [installed]
librealsense2-gl-dbg/focal 2.50.0-0~realsense0.6128 amd64
librealsense2-gl-dev/focal 2.50.0-0~realsense0.6128 amd64
librealsense2-gl/focal,now 2.50.0-0~realsense0.6128 amd64 [installed,automatic]
librealsense2-net-dbg/focal 2.50.0-0~realsense0.6128 amd64
librealsense2-net-dev/focal 2.50.0-0~realsense0.6128 amd64
librealsense2-net/focal,now 2.50.0-0~realsense0.6128 amd64 [installed,automatic]
librealsense2-udev-rules/focal,now 2.50.0-0~realsense0.6128 amd64 [installed,automatic]
librealsense2-utils/focal,now 2.50.0-0~realsense0.6128 amd64 [installed]
librealsense2/focal,now 2.50.0-0~realsense0.6128 amd64 [installed,automatic]
ros-foxy-librealsense2-dbgsym/focal 2.50.0-2focal.20220223.160142 amd64
ros-foxy-librealsense2/focal 2.50.0-2focal.20220223.160142 amd64
ros-foxy-realsense-msgs-dbgsym/focal 2.0.8-2focal.20220209.142543 amd64
ros-foxy-realsense-msgs/focal 2.0.8-2focal.20220209.142543 amd64
ros-foxy-realsense2-camera-dbgsym/focal 4.0.4-1focal.20220323.000248 amd64
ros-foxy-realsense2-camera-msgs-dbgsym/focal 4.0.4-1focal.20220322.234811 amd64
ros-foxy-realsense2-camera-msgs/focal 4.0.4-1focal.20220322.234811 amd64
ros-foxy-realsense2-camera/focal 4.0.4-1focal.20220323.000248 amd64
ros-foxy-realsense2-description/focal 4.0.4-1focal.20220323.000251 amd64
ros-galactic-librealsense2-dbgsym/focal 2.50.0-2focal.20220222.210235 amd64
ros-galactic-librealsense2/focal,now 2.50.0-2focal.20220222.210235 amd64 [installed,automatic]
ros-galactic-realsense2-camera-dbgsym/focal 4.0.4-1focal.20220430.140243 amd64
ros-galactic-realsense2-camera-msgs-dbgsym/focal 4.0.4-1focal.20220430.123523 amd64
ros-galactic-realsense2-camera-msgs/focal,now 4.0.4-1focal.20220430.123523 amd64 [installed,automatic]
ros-galactic-realsense2-camera/focal,now 4.0.4-1focal.20220430.140243 amd64 [installed]
ros-galactic-realsense2-description/focal,now 4.0.4-1focal.20220430.134808 amd64 [installed]
ros-noetic-librealsense2-dbgsym/focal 2.50.0-1focal.20211115.134455 amd64
ros-noetic-librealsense2/focal,now 2.50.0-1focal.20211115.134455 amd64 [installed,automatic]
ros-noetic-realsense2-camera-dbgsym/focal 2.3.2-1focal.20220519.100731 amd64
ros-noetic-realsense2-camera/focal,now 2.3.2-1focal.20220519.100731 amd64 [installed]
ros-noetic-realsense2-description/focal,now 2.3.2-1focal.20220212.161322 amd64 [installed]
The robot ID is stretch-re1-1082
Thanks!