Script for Pulling Uptime Information from Remote VMs

Script for Pulling Uptime Information from Remote VMs

#!/bin/bash

# Prompt user for input file containing list of VMs
read -p "Enter the file containing the list of VMs: " vm_list

# Check if input file exists
if [ ! -f $vm_list ]; then
  echo "Error: Input file does not exist."
  exit 1
fi

# Create output file to store hostname and uptime
output_file="uptime_output.txt"
touch $output_file

# Loop through list of VMs
while IFS= read -r vm; do
  # Get uptime information for current VM
  uptime_info=$(ssh $vm "uptime" 2> /dev/null)
  if [ $? -eq 0 ]; then
    # Extract hostname and uptime from uptime_info
    hostname=$(echo $uptime_info | awk '{print $1}')
    uptime=$(echo $uptime_info | awk '{print $3}' | sed 's/,//g')

    # Append hostname and uptime to output file
    echo "$hostname $uptime" >> $output_file
  else
    echo "Error: Unable to connect to $vm"
  fi
done < $vm_list

This script prompts the user for an input file containing a list of VMs, checks if the input file exists, creates an output file to store the hostname and uptime information, and loops through the list of VMs to remotely connect to each one and pull the uptime information. The hostname and uptime are then extracted from the uptime_info and appended to the output file.

It uses the "uptime" command to get the uptime information and "awk" command to extract the uptime information, which is in the third field and