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C_REHASH(1SSL)                      OpenSSL                     C_REHASH(1SSL)

       c_rehash - Create symbolic links to files named by the hash values

       c_rehash [ directory...]

       c_rehash scans directories and calculates a hash value of each ".pem"
       file in the specified directory list and creates symbolic links for
       each file, where the name of the link is the hash value.  This utility
       is useful as many programs that use OpenSSL require directories to be
       set up like this in order to find certificates.

       If any directories are named on the command line, then those are
       processed in turn. If not, then the SSL_CERT_DIR environment variable
       is consulted; this shold be a colon-separated list of directories, like
       the Unix PATH variable.  If that is not set then the default directory
       (installation-specific but often /usr/local/ssl/certs) is processed.

       In order for a directory to be processed, the user must have write
       permissions on that directory, otherwise it will be skipped.  The links
       created are of the form "HHHHHHHH.D", where each H is a hexadecimal
       character and D is a single decimal digit.  When processing a
       directory, c_rehash will first remove all links that have a name in
       that syntax. If you have links in that format used for other purposes,
       they will be removed.  Hashes for CRL's look similar except the letter
       r appears after the period, like this: "HHHHHHHH.rD".

       Multiple objects may have the same hash; they will be indicated by
       incrementing the D value. Duplicates are found by comparing the full
       SHA-1 fingerprint. A warning will be displayed if a duplicate is found.

       A warning will also be displayed if there are .pem files that cannot be
       parsed as either a certificate or a CRL.

       The program uses the openssl program to compute the hashes and
       fingerprints. If not found in the user's PATH, then set the OPENSSL
       environment variable to the full pathname.  Any program can be used, it
       will be invoked as follows for either a certificate or CRL:

         $OPENSSL x509 -hash -fingerprint -noout -in FFFFFF
         $OPENSSL crl -hash -fingerprint -noout -in FFFFFF

       where FFFFFF is the filename. It must output the hash of the file on
       the first line, and the fingerprint on the second, optionally prefixed
       with some text and an equals sign.

           The path to an executable to use to generate hashes and
           fingerprints (see above).

           Colon separated list of directories to operate on.  Ignored if
           directories are listed on the command line.

       openssl(1), crl(1).  x509(1).

1.0.1t                            2016-05-03                    C_REHASH(1SSL)

Czas wygenerowania: 0.00050 sek.

Created with the man page lookup class by Andrew Collington.
Based on a C man page viewer by Vadim Pavlov
Unicode soft-hyphen fix (as used by RedHat) by Dan Edwards
Some optimisations by Eli Argon
Caching idea and code contribution by James Richardson

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