fc-cache - build font information cache files
fc-cache [ -EfrsvVh ] [ --error-on-no-fonts ] [
  --force ] [ --really-force ] [  [ -y dir ] [
  --sysroot dir ]  ] [ --system-only ] [
  --verbose ] [ --version ] [ --help ] [
  dir... ]
fc-cache scans the font directories on the system and builds font
  information cache files for applications using fontconfig for their font
  handling.
If directory arguments are not given, fc-cache uses each
    directory in the current font configuration. Each directory is scanned for
    font files readable by FreeType. A cache is created which contains
    properties of each font and the associated filename. This cache is used to
    speed up application startup when using the fontconfig library.
Note that fc-cache must be executed once per architecture
    to generate font information customized for that architecture.
This program follows the usual GNU command line syntax, with long options
  starting with two dashes (`-'). A summary of options is included below.
  - -E
- Raise an error if there are no fonts in dir or
      directories in the configuration if not given.
- -f
- Force re-generation of apparently up-to-date cache files, overriding the
      timestamp checking.
- -r
- Erase all existing cache files and rescan.
- -s
- Only scan system-wide directories, omitting the places located in the
      user's home directory.
- -v
- Display status information while busy.
- -y
- Prepend dir to all paths for scanning.
- -h
- Show summary of options.
- -V
- Show version of the program and exit.
- dir
- Directory to scan for fonts.
fc-cache returns zero if the caches successfully generated. otherwise
  non-zero.
  - %cachedir%/*-%arch%.cache-%version%
- These files are generated by fc-cache and contain maps from file
      names to font properties. They are read by the fontconfig library at
      application startup to locate appropriate fonts.
fc-cat(1) fc-list(1) fc-match(1) fc-pattern(1)
  fc-query(1) fc-scan(1)The fontconfig user's guide, in HTML format:
    /usr/share/doc/fontconfig/fontconfig-user.html.
This manual page was written by Keith Packard <keithp@keithp.com> and
  Josselin Mouette <joss@debian.org>.