groff_font
TLDR
List available fonts
$ groff -Tps -Z -f[fontname] < /dev/null
View font directory$ ls /usr/share/groff/current/font/
Check font files$ cat /usr/share/groff/current/font/devps/DESC
DESCRIPTION
groff_font describes the format of font files used by GNU troff (groff). Font files define character metrics, kerning pairs, and other typographic information.
Font files are stored in device-specific subdirectories under /usr/share/groff/. Each output device (ps, pdf, html) has its own font definitions.
FONT FILE FORMAT
$ name fontname
spacewidth n
slant n
ligatures ...
charset
char width type code
...
spacewidth n
slant n
ligatures ...
charset
char width type code
...
FONT DIRECTORIES
$ /usr/share/groff/current/font/devps/ PostScript fonts
/usr/share/groff/current/font/devpdf/ PDF fonts
/usr/share/groff/current/font/devutf8/ UTF-8 terminal
/usr/share/groff/current/font/devhtml/ HTML output
/usr/share/groff/current/font/devpdf/ PDF fonts
/usr/share/groff/current/font/devutf8/ UTF-8 terminal
/usr/share/groff/current/font/devhtml/ HTML output
STANDARD FONTS
$ R - Roman (Times)
I - Italic
B - Bold
BI - Bold Italic
CR - Courier Roman
H - Helvetica
I - Italic
B - Bold
BI - Bold Italic
CR - Courier Roman
H - Helvetica
CAVEATS
Font availability depends on device. Custom fonts need proper installation. PostScript fonts require AFM files. Modern use may prefer pdfgroff.
