the available fixed-width fonts, like this:
@example
-fc-list :spacing=mono fc-list :spacing=charcell
+fc-list :spacing=mono
+fc-list :spacing=charcell
@end example
@noindent
list the available fixed-width fonts, like this:
@example
-xlsfonts -fn '*x*' | egrep "^[0-9]+x[0-9]+"
+xlsfonts -fn '*x*' | grep -E '^[0-9]+x[0-9]+'
xlsfonts -fn '*-*-*-*-*-*-*-*-*-*-*-m*'
xlsfonts -fn '*-*-*-*-*-*-*-*-*-*-*-c*'
@end example