Using this project you may check location of each user which is connected to your Linux server.

1. Get project:

$ git clone https://github.com/mperov/getLinuxUserLocation.git
$ cd getLinuxUserLocation/

2. Create special Python virtual enviroment by

$ sudo apt-get install python3-venv -y
$ python3 -m venv getLinuxUserLocation
$ source getLinuxUserLocation/bin/activate

3. Next install some Python modules - pip3 install -r requirements or python3 -m pip install -r requirements
   If you don't have pip3 then you may install it how described here
4. Generate public and private ssh keys without password via ssh-keygen -t rsa
5. Add public key to remote server using ssh-copy-id -i ~/.ssh/id_rsa.pub -p SSH_PORT YOUR_USER_NAME@IP_ADDRESS_OF_THE_SERVER
6. On remote machine change /etc/sudoers file to run sudo commands without password. For it /etc/sudoers should contain line like this coder ALL=(ALL:ALL) NOPASSWD: ALL
7. Copy script whereFrom to remote server to /opt/ directory, e.g. scp -p 22 ./ubuntu/whereFrom [email protected]:/opt/whereFrom.
   In this project there are some files whereFrom, for Ubuntu, CentOS and for openVPN server. Choose your variante.

1. Load virtual enviroment

$ source getLinuxUserLocation/bin/activate

2. Get location list

$ ./getLocation.py -hi 192.168.1.5 -u coder -p 10028 -k /home/coder/.ssh/id_rsa -o

option -o means that remote server has old operating system, e.g. CentOS 7.9

By the way, there is help output:

$ ./getLocation.py -h
usage: getLocation.py [-h] [-hi HOSTIP] [-p PORT] [-u USER] [-k KEY] [-d] [-o]

optional arguments:
  -h, --help            show this help message and exit
  -hi HOSTIP, --hostIP HOSTIP
                        contain IP address your server
  -p PORT, --port PORT  contain ssh port
  -u USER, --user USER  contain username with sudo rules
  -k KEY, --private-key KEY
                        contain path to private key file
  -d, --debug           this option enables debug mode
  -o, --old             this option for old Linux distributions