fc-list

 

fc-list :charset=1f63f | less 

fc-list

 fc-query /usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf  | less 

 fc-query "/home/kai/.fonts/Preeti Normal.otf" 
Pattern has 25 elts (size 32)
	family: "Preeti"(s)
	familylang: "en"(s)
	style: "Normal"(s)
	stylelang: "en"(s)
	fullname: "Preeti"(s)
	fullnamelang: "en"(s)
	slant: 0(i)(s)
	weight: 80(f)(s)
	width: 100(f)(s)
	foundry: "unknown"(s)
	file: "/home/kai/.fonts/Preeti Normal.otf"(s)
	index: 0(i)(s)
	outline: True(s)
	scalable: True(s)
	charset: 
	0000: 00000000 ffffffff ffffffff 7fffffff 00000000 80530caf ff447860 008000e0
	0002: 00000000 00000000 00000000 00000000 00000000 00000000 10000040 00000000
	0020: 41180000 06010044 00000000 00000000 00000000 00000000 00000000 00000000
(s)
	lang: fj|ho|ia|io|nr|om|so|ss|st|sw|ts|uz|xh|zu|kj|kwm|ms|ng|rn|rw|sn|za(s)
	fontversion: 65536(i)(s)
	fontformat: "TrueType"(s)
	decorative: False(s)
	postscriptname: "Preeti"(s)
	color: False(s)
	symbol: False(s)
	variable: False(s)
	fonthashint: True(s)
	order: 0(i)(s)

The fontconfig commands can output the glyph list as a compact list of ranges, eg:

Use fc-query for a .ttf file and fc-match for an installed font name.

fc-query --format='%{charset}\n'  "/home/kai/.fonts/Preeti Normal.otf" 
20-7e a0-a3 a5 a7 aa-ab b0-b1 b4 b6 bf c5-c6 cb-ce d2 d6 d8-df e5-e7 f7 2c6 2dc 2013-2014 2018 201e 2022 2026 2030 2039-203a

list-font 

#!/bin/bash 

for range in $(fc-match --format='%{charset}\n' "$1"); do
    for n in $(seq "0x${range%-*}" "0x${range#*-}"); do
        printf "%04x\n" "$n"
    done
done | while read -r n_hex; do
    count=$((count + 1))
    printf "%-5s\U$n_hex\t" "$n_hex"
    [ $((count % 10)) = 0 ] && printf "\n"
done
printf "\n"

bash list-font font.otf