rhostinfo.bash

#!/bin/bash
trap exit SIGINT SIGTERM
sshcmd="ssh -q -o StrictHostKeyChecking=no"
hostlist=""
username=""
outfile=""
totalhosts=0
while getopts :u:f:o:h arg ; do
	case $arg in
		u)
			echo "Using '$OPTARG' as user name to log in to remote host(s)."
			username="$OPTARG"
			echo
			;;
		f)
			echo "Reading host list from file: '$OPTARG'"
			totalhosts=$(wc -l < "$OPTARG")
			echo "Found $totalhosts host(s)."
			hostlist=$(tr '\n' ' ' < "$OPTARG")
			echo
			;;
		h)
			echo "
				This script gathers hardware info from remote hosts via SSH. Please use key-based authentication for simplicity.
				The hosts can be specified in a line-separated file passed as the first argument, or as a space-separated list when prompted.
				A remote user can be optionally specified. If it is not specfied, the current user will be used. This is currently detected as '$USER'.
				If you wish to save the output to CSV, you can specify a file with -o.
				Usage: $0 [-f host-list.txt] [-u remote-user-id] [-o host-info.csv]
				Press 'q' to quit" | tr -d '\t'  | fold -sw "$(tput cols)" | less
			exit
			;;
		o)
			echo "Will output CSV to file: $OPTARG"
			outfile="$OPTARG"
			echo
			;;
		*)
			echo -e "Unknown option: '$OPTARG' \nFor usage, type '$0 -h'"
			exit
			;;
	esac
done
if [ "$outfile" != "" ]; then
	csv="$outfile"
else
	csv="$(mktemp)"
fi
if [ "$hostlist" = "" ]; then
read -rp 'Host list empty. Please specify a space-separated list of hosts to gather hardware info from:
# ' hostlist
	totalhosts=$(echo "$hostlist" | tr ' ' '\n' | wc -l)
	echo -e "Host list: \n$hostlist\n"
fi
if [ "$username" = "" ]; then
	echo "Using '$USER' as user name to log in to remote host(s)."
	username="$USER"
	echo
fi
hostprogress=1
echo "Host,OS Info,CPU Model,CPU Speed,CPU Sockets,Cores per Socket,Vendor,Total Memory,Consumed Disk,Provisioned Disk" > "$csv"
for host in $hostlist; do
	(>&2 echo "Gathering info from: $host ($hostprogress/$totalhosts)")
		osinfo="$($sshcmd "$username@$host" "grep -E 'DISTRIB_DESCRIPTION|release' /etc/*release | head -n 1")"
		cpumodel="$($sshcmd "$username@$host" "grep -m1 'model name' /proc/cpuinfo | sed 's/^[a-z \t:]*//;s/[CPU @]*[0-9\.]*GHz//'")"
		cpuspeed="$($sshcmd "$username@$host" "grep -oiPm1 '[\d\.]+GHz' /proc/cpuinfo")"
		cpusockets="$($sshcmd "$username@$host" "grep 'physical id' /proc/cpuinfo | sort -u | wc -l")"
		corespersocket="$($sshcmd "$username@$host" "grep -m1 'cpu cores' /proc/cpuinfo | awk '{print \$4}'")"
		vendor="$($sshcmd "$username@$host" "sed 's/,/،/g' < /sys/class/dmi/id/sys_vendor")"
		memtotal="$($sshcmd "$username@$host" "grep 'MemTotal' /proc/meminfo | awk '{print \$2}'")"
			(( memtotal = "$memtotal" / 1000000 )) # to GB
		diskconsumed="0"
			for mount in $(printf "df -lkP -x tmpfs -x devtmpfs | awk '{print \$3}' | grep -v Used | tr '\n' ' '" | $sshcmd "$username@$host" bash); do
				(( diskconsumed = "$diskconsumed" + "$mount" ))
			done
			(( diskconsumed = "$diskconsumed" / 1000000 )) # to GB
		diskprovisioned="0"
			for mount in $(printf "df -lkP -x tmpfs -x devtmpfs | awk '{print \$2}' | grep -v blocks | tr '\n' ' '" | $sshcmd "$username@$host" bash); do
				(( diskprovisioned = "$diskprovisioned" + "$mount" ))
			done
			(( diskprovisioned = "$diskprovisioned" / 1000000 )) # to GB
	echo "$host,$osinfo,$cpumodel,$cpuspeed,$cpusockets,$corespersocket,$vendor,$memtotal GB,$diskconsumed GB,$diskprovisioned GB" >> "$csv"
	(( hostprogress = "$hostprogress" + 1 ))
done
echo
column -s, -t < "$csv"
echo
if [ "$csv" != "$outfile" ]; then
	rm "$csv"
fi
if [ "$outfile" != "" ]; then
	echo "Output saved as CSV to: $outfile"
fi

When running this in a vSphere VM, the hardware is reported as "VMware, Inc". This obviously causes problems with column alignment in a csv. Probably just need to strip out any commas from those fields.