openssl genpkey -help

saolasosme

Generation of DSA Private Key from Parameters. Superseded by genpkey(1) and pkey(1).

$ openssl genpkey -help
Usage: genpkey [options]
Valid options are:
 -help              Display this summary
 -out outfile       Output file
 -outform PEM|DER   output format (DER or PEM)
 -pass val          Output file pass phrase source
 -paramfile infile  Parameters file
 -algorithm val     The public key algorithm
 -pkeyopt val       Set the public key algorithm option as opt:value
 -genparam          Generate parameters, not key
 -text              Print the in text
 -*                 Cipher to use to encrypt the key
 -engine val        Use engine, possibly a hardware device
Order of options may be important!  See the documentation.