4.6 Informative Output

‘-h’

‘--help’

Prints a short summary on the meaning of each program option. Aborts further program execution.

‘-v’

‘--version’

Prints out the current version number.

‘-d’

‘--debug’

Enables the debugging option. This produces verbose diagnostics to “standard error” when gperf is executing. It is useful both for maintaining the program and for determining whether a given set of options is actually speeding up the search for a solution. Some useful information is dumped at the end of the program when the ‘-d’ option is enabled.