Syntax: grid-proxy-info [-help][-f proxyfile][-subject][...][-e [-h H][-b B]]

    Options
    -help, -usage             Displays usage
    -version                  Displays version
    -debug                    Displays debugging output
    -file <proxyfile>  (-f)   Non-standard location of proxy
    [printoptions]            Prints information about proxy
    -exists [options]  (-e)   Returns 0 if valid proxy exists, 1 otherwise

    [printoptions]
        -subject       (-s)   Distinguished name (DN) of subject
        -issuer        (-i)   DN of issuer (certificate signer)
        -identity             DN of the identity represented by the proxy
        -type                 Type of proxy (full or limited)
        -timeleft             Time (in seconds) until proxy expires
        -strength             Key size (in bits)
        -all                  All above options in a human readable format
        -text                 All of the certificate
        -path                 Pathname of proxy file

    [options to -exists]      (if none are given, H = B = 0 are assumed)
        -valid H:M     (-v)   time requirement for proxy to be valid
        -hours H       (-h)   time requirement for proxy to be valid
                              (deprecated, use -valid instead)
        -bits  B       (-b)   strength requirement for proxy to be valid