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$ openssl version
OpenSSL 0.9.8zh 14 Jan 2016
$ openssl dgst -h
unknown option '-h'
options are
-c to output the digest with separating colons
-d to output debug info
-hex output as hex dump
-binary output in binary form
-sign file sign digest using private key in file
-verify file verify a signature using public key in file
-prverify file verify a signature using private key in file
-keyform arg key file format (PEM or ENGINE)
-signature file signature to verify
-binary output in binary form
-hmac key create hashed MAC with key
-engine e use engine e, possibly a hardware device.
-md5 to use the md5 message digest algorithm (default)
-md4 to use the md4 message digest algorithm
-md2 to use the md2 message digest algorithm
-sha1 to use the sha1 message digest algorithm
-sha to use the sha message digest algorithm
-sha224 to use the sha224 message digest algorithm
-sha256 to use the sha256 message digest algorithm
-sha384 to use the sha384 message digest algorithm
-sha512 to use the sha512 message digest algorithm
-mdc2 to use the mdc2 message digest algorithm
-ripemd160 to use the ripemd160 message digest algorithm
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