For a TrueType font, you can use thettfdumputility which is available from TeXlive.
ttfdump -t cmap -i /usr/share/fonts/truetype/freefont/FreeSerif.ttf |
perl -CS -ne 'print chr(hex($1)) if /Char (0x[[:xdigit:]]+)/ and hex($1) != 0xffff; END {print "\n"}'
Experimentally, this only seems to list code points below U+FFFF. I don't know if this is a bug inttfdumpor if this is because extra work is needed to reach other planes.
For any font that is supported by Freetype, the Freetype library makes this information available, but there doesn't seem to be a readily available command line utility to query it. Here's a one-liner using the Freetype-py Python bindings, which you can install withpip3 install --user freetype-py.
python3 -c 'import freetype, sys; stdout = open(1, mode="w", encoding="utf8"); face = freetype.Face(sys.argv[1]); stdout.write("".join(sorted([chr(c) for c, g in face.get_chars() if c]) + ["\n"]))' /usr/share/fonts/truetype/freefont/FreeSerif.ttf
For fonts that could be used in Linux with fontconfig (almost all).
There are two related questions that usually come from fonts and Unicode:
fc-list :charset=1f63f | less # all installed fonts that have 1f63f
fc-query /usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf | less
fc-query --format='%{charset}\n' /usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf | less
Both commands could work with an non-installed font file. If the font has been installed, the commandfc-matchdoes the same work.
The list is not exactly "each glyph", it needs additional work to get there, but is a reasonable clear list of what a font contains.
Since looking to glyphs is a visual task, you need a GUI application to see the glyphs of a font. Printing them on the command line could be done with any font that is configured by the terminal application, not the font you mean to use.
You can try the following script (called fontcharlist):
#!/bin/bash -
Usage() { echo "$0 FontFile"; exit 1; }
SayError() { local error=$1; shift; echo "$0: $@"; exit "$error"; }
[ "$#" -ne 1 ] && Usage
width=70
fontfile="$1"
[ -f "$fontfile" ] || SayError 4 'File not found'
list=$(fc-query --format='%{charset}\n' "$fontfile")
for range in $list
do IFS=- read start end <<<"$range"
if [ "$end" ]
then
start=$((16#$start))
end=$((16#$end))
for((i=start;i<=end;i++)); do
printf -v char '\\U%x' "$i"
printf '%b' "$char"
done
else
printf '%b' "\\U$start"
fi
done | grep -oP '.{'"$width"'}'
And get a list of characters in a font like this:
$ ./fontcharlist /usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf
!"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcde
fghijklmnopqrstuvwxyz{|}~ ¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌ
ÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿĀāĂ㥹ĆćĈĉĊċČčĎďĐđĒ
ēĔĕĖėĘęĚěĜĝĞğĠġĢģĤĥĦħĨĩĪīĬĭĮįİıIJijĴĵĶķĸĹĺĻļĽľĿŀŁłŃńŅņŇňʼnŊŋŌōŎŏŐőŒœŔŕŖŗŘ
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ƟƠơƢƣƤƥƦƧƨƩƪƫƬƭƮƯưƱƲƳƴƵƶƷƸƹƺƻƼƽƾƿǀǁǂǃǍǎǏǐǑǒǓǔǕǖǗǘǙǚǛǜǝǞǟǠǡǢǣǦǧǨǩǪǫǬǭǮǯ
ǰǴǵǶǸǹǼǽǾǿȀȁȂȃȄȅȆȇȈȉȊȋȌȍȎȏȐȑȒȓȔȕȖȗȘșȚțȜȝȞȟȠȡȤȥȦȧȨȩȪȫȬȭȮȯȰȱȲȳȴȵȶȷȸȹȺȻȼȽ
ȾȿɀɁɃɄɅɌɍɐɑɒɓɔɕɖɗɘəɚɛɜɝɞɟɠɡɢɣɤɥɦɧɨɩɪɫɬɭɮɯɰɱɲɳɴɵɶɷɸɹɺɻɼɽɾɿʀʁʂʃʄʅʆʇʈʉʊʋʌ
ʍʎʏʐʑʒʓʔʕʖʗʘʙʚʛʜʝʞʟʠʡʢʣʤʥʦʧʨʩʪʫʬʭʮʯʰʱʲʳʴʵʶʷʸʹʻʼʽʾʿˀˁˆˇˈˉˌˍˎˏːˑ˒˓˖˗˘˙˚˛
˜˝˞ˠˡˢˣˤ˥˦˧˨˩ˮ˳̀́̂̃̄̅̆̇̈̉
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ηθικλμνξοπρςστυφχψωϊϋόύώϐϑϒϓϔϕϖϗϘϙϚϛϜϝϞϟϠϡϰϱϲϳϴϵ϶ϷϸϹϺϻϼϽϾϿЀЁЂЃЄЅІЇЈЉЊЋ
ЌЍЎЏАБВГДЕЖЗИЙКЛМНОПРСТУФХЦЧШЩЪЫЬЭЮЯабвгдежзийклмнопрстуфхцчшщъыьэюяѐё
ђѓєѕіїјљњћќѝўџѢѣѲѳҐґҒғҔҕҖҗҘҙҚқҢңҤҥҪҫҬҭҮүҰұҲҳҺһӀӁӂӃӄӇӈӋӌӏӐӑӒӓӔӕӖӗӘәӚӛӜӝ
ӞӟӠӡӢӣӤӥӦӧӨөӪӫӬӭӮӯӰӱӲӳӴӵӶӷӸӹԐԑԚԛԜԝԱԲԳԴԵԶԷԸԹԺԻԼԽԾԿՀՁՂՃՄՅՆՇՈՉՊՋՌՍՎՏՐՑՒՓՔ
ՕՖՙ՚՛՜՝՞՟աբգդեզէըթժիլխծկհձղճմյնշոչպջռսվտրցւփքօֆև։֊؆؇؉؊،ؕ؛؟ءآأؤإئابةتثج
حخدذرزسشصضطظعغـفقكلمنهوىيًٌٍَُِّْٓٔ٠١٢٣٤٥٦٧٨٩٪٫٬٭ٴٹٺٻپٿڀڃڄچڇڑژڤکگھی۰
۱۲۳۴۵۶۷۸۹฿ກຂຄງຈຊຍດຕຖທນບປຜຝພຟມຢຣລວສຫອຮຯະັາຳິີຶືຸູົຼ່້აბგდევზთიკლმნო
პჟრსტუფქღყშჩცძწჭხჯჰჱჲჳჴჵჶჷჸჹჺ჻ჼᴂᴈᴉᴔᴖᴗᴝᴞᴟᴬᴭᴮᴰᴱᴲᴳᴴᴵᴶᴷᴸᴹᴺᴻᴼᴾᴿᵀᵁᵂᵃᵄᵅᵆᵇᵈᵉᵊᵋ
ᵌᵍᵎᵏᵐᵑᵒᵓᵔᵕᵖᵗᵘᵙᵚᵛᵢᵣᵤᵥᵷᵸᵻᶅᶛᶜᶝᶞᶟᶠᶡᶢᶣᶤᶥᶦᶧᶨᶩᶪᶫᶬᶭᶮᶯᶰᶱᶲᶳᶴᶵᶶᶷᶹᶺᶻᶼᶽᶾᶿḀḁḂḃḄḅḆḇḈḉ
ḊḋḌḍḎḏḐḑḒḓḘḙḚḛḜḝḞḟḠḡḢḣḤḥḦḧḨḩḪḫḬḭḰḱḲḳḴḵḶḷḸḹḺḻḼḽḾḿṀṁṂṃṄṅṆṇṈṉṊṋṌṍṔṕṖṗṘṙṚṛ
ṜṝṞṟṠṡṢṣṨṩṪṫṬṭṮṯṰṱṲṳṴṵṶṷṸṹṼṽṾṿẀẁẂẃẄẅẆẇẈẉẊẋẌẍẎẏẐẑẒẓẔẕẖẗẘẙẛẟẠạẬậẰằẶặẸẹẼẽ
ỆệỊịỌọỘộỚớỜờỠỡỢợỤụỨứỪừỮữỰựỲỳỴỵỸỹἀἁἂἃἄἅἆἇἈἉἊἋἌἍἎἏἐἑἒἓἔἕἘἙἚἛἜἝἠἡἢἣἤἥἦἧἨἩ
ἪἫἬἭἮἯἰἱἲἳἴἵἶἷἸἹἺἻἼἽἾἿὀὁὂὃὄὅὈὉὊὋὌὍὐὑὒὓὔὕὖὗὙὛὝὟὠὡὢὣὤὥὦὧὨὩὪὫὬὭὮὯὰάὲέὴήὶί
ὸόὺύὼώᾀᾁᾂᾃᾄᾅᾆᾇᾈᾉᾊᾋᾌᾍᾎᾏᾐᾑᾒᾓᾔᾕᾖᾗᾘᾙᾚᾛᾜᾝᾞᾟᾠᾡᾢᾣᾤᾥᾦᾧᾨᾩᾪᾫᾬᾭᾮᾯᾰᾱᾲᾳᾴᾶᾷᾸᾹᾺΆᾼ᾽ι᾿῀
῁ῂῃῄῆῇῈΈῊΉῌ῍῎῏ῐῑῒΐῖῗῘῙῚΊ῝῞῟ῠῡῢΰῤῥῦῧῨῩῪΎῬ῭΅`ῲῳῴῶῷῸΌῺΏῼ´῾ ‐‑‒–
—―‖‗‘’‚‛“”„‟†‡•‣… ‰‱′″‴‵‶‷‹›‼‽‾‿⁅⁆⁇⁈⁉⁋ ⁰ⁱ⁴⁵⁶⁷⁸⁹⁺⁻⁼⁽⁾ⁿ₀₁₂₃₄₅₆₇₈₉₊₋₌₍₎ₐₑ
ₒₓₔₕₖₗₘₙₚₛₜ₠₡₢₣₤₥₦₧₨₩₪₫€₭₮₯₰₱₲₳₴₵₸₹₺₽ℂ℅ℍℎℏℕ№℗ℙℚℝ™ℤΩKÅ℮ⅈ⅐⅑⅓⅔⅕⅖⅗⅘⅙⅚⅛⅜⅝⅞⅟
↉←↑→↓↔↕↖↗↘↙↚↛↜↝↞↟↠↡↢↣↤↥↦↧↨↩↪↫↬↭↮↯↰↱↲↳↴↵↶↷↸↹↺↻↼↽↾↿⇀⇁⇂⇃⇄⇅⇆⇇⇈⇉⇊⇋⇌⇍⇎⇏⇐⇑⇒⇓⇔
⇕⇖⇗⇘⇙⇚⇛⇜⇝⇞⇟⇠⇡⇢⇣⇤⇥⇦⇧⇨⇩⇪⇫⇬⇭⇮⇯⇰⇱⇲⇳⇴⇵⇶⇷⇸⇹⇺⇻⇼⇽⇾⇿∀∁∂∃∄∅∆∇∈∉∊∋∌∍∎∏∐∑−∓∕∗∘∙√∛∜
∝∞∟∠∣∧∨∩∪∫∬∭∴∵∶∷∸∹∺∻∼∽≁≂≃≄≅≆≇≈≉≊≋≌≍≎≏≐≑≒≓≔≕≖≗≘≙≚≛≜≝≞≟≠≡≢≣≤≥≦≧≨≩≭≮≯≰≱≲≳
≴≵≶≷≸≹≺≻≼≽≾≿⊀⊁⊂⊃⊄⊅⊆⊇⊈⊉⊊⊋⊍⊎⊏⊐⊑⊒⊓⊔⊕⊖⊗⊘⊙⊚⊛⊜⊝⊞⊟⊠⊡⊢⊣⊤⊥⊲⊳⊴⊵⊸⋂⋃⋄⋅⋆⋍⋎⋏⋐⋑⋚⋛⋜⋝⋞⋟
⋠⋡⋢⋣⋤⋥⋦⋧⋨⋩⋯⌀⌁⌂⌃⌄⌅⌆⌈⌉⌊⌋⌌⌍⌎⌏⌐⌑⌒⌓⌔⌕⌘⌙⌜⌝⌞⌟⌠⌡⌥⌦⌧⌨⌫⌵⌶⌷⌸⌹⌺⌻⌼⌽⌾⌿⍀⍁⍂⍃⍄⍅⍆⍇⍈⍉⍊⍋⍌⍍
⍎⍏⍐⍑⍒⍓⍔⍕⍖⍗⍘⍙⍚⍛⍜⍝⍞⍟⍠⍡⍢⍣⍤⍥⍦⍧⍨⍩⍪⍫⍬⍭⍮⍯⍰⍱⍲⍳⍴⍵⍶⍷⍸⍹⍺⍽⎀⎁⎂⎃⎈⎉⎊⎋⎕⎛⎜⎝⎞⎟⎠⎡⎢⎣⎤⎥⎦⎧⎨⎩
⎪⎫⎬⎭⎮⏎⏏␣─━│┃┄┅┆┇┈┉┊┋┌┍┎┏┐┑┒┓└┕┖┗┘┙┚┛├┝┞┟┠┡┢┣┤┥┦┧┨┩┪┫┬┭┮┯┰┱┲┳┴┵┶┷┸┹┺┻┼┽
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◊○◌◍◎●◐◑◒◓◔◕◖◗◘◙◚◛◜◝◞◟◠◡◢◣◤◥◦◧◨◩◪◫◬◭◮◯◰◱◲◳◴◵◶◷◸◹◺◻◼◽◾◿☀☁☂☃☄★☆☇☈☉☊☋☌☍☎☏
☐☑☒☓☔☕☖☗☘☙☚☛☜☝☞☟☠☡☢☣☤☥☦☧☨☩☪☫☬☭☮☯☸☹☺☻☼☽☾☿♀♁♂♃♄♅♆♇♈♉♊♋♌♍♎♏♐♑♒♓♔♕♖♗♘♙♚♛♜♝
♞♟♠♡♢♣♤♥♦♧♨♩♪♫♬♭♮♯♰♱♲♳♴♵♶♷♸♹♺♻♼♽♾♿⚀⚁⚂⚃⚄⚅⚆⚇⚈⚉⚊⚋⚐⚑⚒⚓⚔⚕⚖⚗⚘⚙⚚⚛⚜⚠⚡⚰⚱✁✂✃✄✆✇✈
✉✌✍✎✏✐✑✒✓✔✕✖✗✘✙✚✛✜✝✞✟✠✡✢✣✤✥✦✧✩✪✫✬✭✮✯✰✱✲✳✴✵✶✷✸✹✺✻✼✽✾✿❀❁❂❃❄❅❆❇❈❉❊❋❍❏❐❑❒❖
❘❙❚❛❜❝❞❡❢❣❤❥❦❧❨❩❪❫❬❭❮❯❰❱❲❳❴❵➔➘➙➚➛➜➝➞➟➠➡➢➣➤➥➦➧➨➩➪➫➬➭➮➯➱➲➳➴➵➶➷➸➹➺➻➼➽➾⟂⟅⟆
⟜⟠⟦⟧⟨⟩⟪⟫⟵⟶⟷⦇⦈⦗⦘⧫⧺⧻⨀⨯⩪⩫⬅⬆⬇⬈⬉⬊⬋⬌⬍⬒⬓⬔⬕⬖⬗⬘⬙⬚ⱤⱭⱮⱯⱰⱵⱶⱷⱹⱺⱼⱽⱾⱿ⸘⸟⸢⸣⸤⸥⸮꜈꜉꜊꜋꜌꜍꜎꜏꜐
꜑꜒꜓꜔꜕꜖ꜛꜜꜝꜞꜟꜢꜣꜤꜥꜦꜧ꞉꞊ꞋꞌꞍꞎꞐꞑꞪꟸꟹfiflﭒﭓﭔﭕﭖﭗﭘﭙﭚﭛﭜﭝﭞﭟﭠﭡﭢﭣﭤﭥﭦﭧﭨﭩﭪﭫﭬﭭﭮﭯﭰﭱﭲﭳﭴﭵﭶﭷﭸ
ﭹﭺﭻﭼﭽﭾﭿﮀﮁﮊﮋﮌﮍﮎﮏﮐﮑﮒﮓﮔﮕﮞﮟﮪﮫﮬﮭﯨﯩﯼﯽﯾﯿﹰﹱﹲﹳﹴﹶﹷﹸﹹﹺﹻﹼﹽﹾﹿﺀﺁﺂﺃﺄﺅﺆﺇﺈﺉﺊﺋﺌﺍﺎﺏﺐﺑﺒﺓﺔﺕ
ﺖﺗﺘﺙﺚﺛﺜﺝﺞﺟﺠﺡﺢﺣﺤﺥﺦﺧﺨﺩﺪﺫﺬﺭﺮﺯﺰﺱﺲﺳﺴﺵﺶﺷﺸﺹﺺﺻﺼﺽﺾﺿﻀﻁﻂﻃﻄﻅﻆﻇﻈﻉﻊﻋﻌﻍﻎﻏﻐﻑﻒﻓﻔﻕﻖﻗﻘﻙﻚﻛ
ﻜﻝﻞﻟﻠﻡﻢﻣﻤﻥﻦﻧﻨﻩﻪﻫﻬﻭﻮﻯﻰﻱﻲﻳﻴﻵﻶﻷﻸﻹﻺﻻﻼ�
To actually see the exact same glyphs from a font usexfd:
xfd -fa /usr/share/fonts/truetype/unifont/unifont_upper.ttf
Which is part of thex11-utilspackage.