virt-check.func

#!/bin/bash
#
# Virtual Function
# Detect if a server is virtual or not, without root access
#
# 1. check for "virtual" in /var/log/dmesg
# 2. check for "virtual" in /proc/scsi/scsi
#
virt () {
        if [ -e /var/log/dmesg ] && [ -r /var/log/dmesg ]; then
                DMESG="$(grep -i dmi /var/log/dmesg | grep -i virtual)"
                if [ -n "$DMESG" ]; then
                        if [ -e /proc/scsi/scsi ] && [ -r /proc/scsi/scsi ]; then
                        SCSI="$(grep -i virtual /proc/scsi/scsi)"
                                if [ -n "$SCSI" ]; then
                                        echo "Virtual"
                                else
                                        echo "Not Virtual"
                                fi
                        else
                                echo "Not Virtual"
                        fi
                else
                        echo "/proc/scsi/scsi is not accessible (permission denied)"
                fi
        else
                echo "/var/log/dmesg is not accessible (permission denied)"
        fi
}