Next: , Previous: Escapes, Up: Print File Information



3.2.2 Format Directives

-printf and -fprintf support the following format directives to print information about the file being processed. The C printf function, field width and precision specifiers are supported, as applied to string (%s) types. That is, you can specify "minimum field width"."maximum field width" for each directive. Format flags (like # for example) may not work as you expect because many of the fields, even numeric ones, are printed with %s. The format flag - does work; it forces left-alignment of the field.

%% is a literal percent sign. A % character followed by an unrecognised character (i.e. not a known directive or printf field width and precision specifier), is discarded (but the unrecognised character is printed), and a warning message is printed to the standard error output (because it was probably a typo).