revinfo - Identify your Pi

#!/bin/bash

# Identify RPI model
#
# Based on data from:
#   https://www.element14.com/community/community/raspberry-pi/blog/2016/11/21/how-to-identify-which-model-of-the-raspberry-pi-you-have
#
# Copyright 2017 Timothe Litt litt at acm ddot org
#
# Use at your own risk; otherwise unrestricted provided
# this notice is included in all copies.
#

declare -A revs
revs=( [Beta]="Q1 2012|B(Beta)|?|256MB|Beta Board"
       [0002]="Q1 2012|B|1.0|256MB|"
       [0003]="Q3 2012|B (ECN0001)|1.0|256MB|Fuses mod and D4 removed"
       [0004]="Q3 2012|B|2.0|256MB|Mfg by Sony"
       [0005]="Q4 2012|B|2.0|256MB|Mfg by Qisda"
       [0006]="Q4 2012|B|2.0|256MB|Mfg by Egoman"
       [0007]="Q1 2013|A|2.0|256MB|Mfg by Egoman"
       [0008]="Q1 2013|A|2.0|256MB|Mfg by Sony"
       [0009]="Q1 2013|A|2.0|256MB|Mfg by Qisda"
       [000d]="Q4 2012|B|2.0|512MB|Mfg by Egoman"
       [000e]="Q4 2012|B|2.0|512MB|Mfg by Sony"
       [000f]="Q4 2012|B|2.0|512MB|Mfg by Qisda"
       [0010]="Q3 2014|B+|1.0|512MB|Mfg by Sony"
       [0011]="Q2 2014|Compute Module|1.0|512MB|Mfy by Sony"
       [0012]="Q4 2014|A+|1.1|256MB|Mfg by Sony"
       [0013]="Q1 2015|B+|1.2|512MB|Mfg by Embest"
       [0014]="Q2 2014|Compute Module|1.0|512MB|Mfg by Embest"
       [0015]="?|A+|1.1|256MB/512MB|Mfg by Embest"
       [a01040]="Unknown|2 Model B|1.0|1GB|Unknown"
       [a01041]="Q1 2015|2 Model B|1.1|1GB|Mfg by Sony"
       [a21041]="Q1 2015|2 Model B|1.1|1GB|Mfg by Embest"
       [a22042]="Q3 2016|2 Model B(with BCM2837)|1.2|1GB|Mfg by Embest"
       [a02082]="Q1 2016|3 Model B|1.2|1GB|Mfg by Sony"
       [a22082]="Q1 2016|3 Model B|1.2|1GB|Mfg by Embest"
)

function prev() {
    local rev="$1"

    if [ -z "${revs[$rev]}" ]; then
        printf "Revision %-6s Unknown\n" "$rev"
        return
    fi

    IFS='|' read -ra RI <<< "${revs[$rev]}"

    printf "Revision %-6s %-7s %-32s %-4s %-11s %s\n" \
        "$rev" "${RI[0]}" "${RI[1]}" "${RI[2]}" "${RI[3]}" "${RI[4]}"
}

printf "         %-6s %-7s %-32s %-4s %-11s %s\n" \
    "" "R.Date" "Model" "PCB" "Mem" "Notes"

if [ -n "$1" ]; then
    ( for rev in "${!revs[@]}"; do
            prev "$rev"
            done
    ) | sort
else
    pi_rev=(`cat /proc/cpuinfo | grep Revision`)
    prev "${pi_rev[2]}"
fi