bash_script_template.sh

#!/bin/bash

# Set the script name and log file name
SCRIPT_NAME=$(basename "$0")
LOG_FILE="/var/log/${SCRIPT_NAME%.*}.log"

# Function to handle errors and log them to the log file
handle_error() {
  local error_message="$1"
  local line_number="$2"

  # Log the error message
  echo "${error_message}" | tee -a "${LOG_FILE}"

  # Exit with non-zero status
  exit 1
}

# Function to validate input parameters
validate_input() {
  local input="$1"

  # Add validation logic here

  # Return 0 if input is valid, or 1 if input is invalid
  return 0
}

# Trap any errors and log them
trap 'handle_error "Error on line ${LINENO}: $(echo $BASH_COMMAND)" "${LINENO}"' ERR

# Log the start of the script
echo "Starting ${SCRIPT_NAME} at $(date)" | tee -a "${LOG_FILE}"

# Validate input parameters
if ! validate_input "${1}"; then
  handle_error "Invalid input: ${1}" "${LINENO}"
fi

# Add main script logic here

# Log the end of the script
echo "Ending ${SCRIPT_NAME} at $(date)" | tee -a "${LOG_FILE}"

# Exit with zero status
exit 0