Path to Linux / Unix Systems Administrator Post: 302415485

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Top Forums UNIX for Dummies Questions & Answers Path to Linux / Unix Systems Administrator Post 302415485 by rhfrommn on Thursday 22nd of April 2010 04:18:55 PM

04-22-2010

Registered User

One comment I'd have is that a large fraction of the admins I know had an experience in their career where they got thrown in way over their head and they had to learn under pressure. One of my mentors worked at a large bank, and 1 month after becoming a Unix admin the senior admin quit so he ended up in charge of hundreds of workstations and servers by himself.

In my case, 1 year after getting into Unix I was hired to be the middle person of a 3 admin team for a fairly small company. There was supposed to be a very experienced admin hired for the senior position. The day I showed up they told me the senior guy got another job offer and wouldn't be joining the company. So day 1 I ended up in charge of the entire Unix environment for a new company I'd never worked at before! Not long after that, due to layoffs I ended up the only person between both Unix and Storage teams, doing the work that was handled by a team of 6 about a year earlier. It was tons of work and stress having to come up to speed that fast and handle everything on my own. But for the long range career outlook it was great. I had experience and knowledge I never would have gotten working under a more senior admin again.

So, I guess the practical advice for you is to find a way to work on Unix, even if you think it's beyond what you can do. If you truly love it and have the talent and smarts it takes you'll manage to get by and learn more than you ever could reading books. Find a part time or entry level Unix job, or volunteer at the church/school/charity of your choice to work on their Linux or Unix systems, or somthing like that. Find a way to get real world experience even if it seems intimidating at first.

Good luck.

rhfrommn

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x509

x509(3) 							      OpenSSL								   x509(3)

NAME

       x509 - X.509 certificate handling

SYNOPSIS

	#include <openssl/x509.h>

DESCRIPTION

       A X.509 certificate is a structured grouping of information about an individual, a device, or anything one can imagine.	A X.509 CRL
       (certificate revocation list) is a tool to help determine if a certificate is still valid.  The exact definition of those can be found in
       the X.509 document from ITU-T, or in RFC3280 from PKIX.	In OpenSSL, the type X509 is used to express such a certificate, and the type
       X509_CRL is used to express a CRL.

       A related structure is a certificate request, defined in PKCS#10 from RSA Security, Inc, also reflected in RFC2896.  In OpenSSL, the type
       X509_REQ is used to express such a certificate request.

       To handle some complex parts of a certificate, there are the types X509_NAME (to express a certificate name), X509_ATTRIBUTE (to express a
       certificate attributes), X509_EXTENSION (to express a certificate extension) and a few more.

       Finally, there's the supertype X509_INFO, which can contain a CRL, a certificate and a corresponding private key.

       X509_..., d2i_X509_... and i2d_X509_... handle X.509 certificates, with some exceptions, shown below.

       X509_CRL_..., d2i_X509_CRL_... and i2d_X509_CRL_...  handle X.509 CRLs.

       X509_REQ_..., d2i_X509_REQ_... and i2d_X509_REQ_...  handle PKCS#10 certificate requests.

       X509_NAME_... handle certificate names.

       X509_ATTRIBUTE_... handle certificate attributes.

       X509_EXTENSION_... handle certificate extensions.

SEE ALSO

       X509_NAME_ENTRY_get_object(3), X509_NAME_add_entry_by_txt(3), X509_NAME_add_entry_by_NID(3), X509_NAME_print_ex(3), X509_NAME_new(3),
       d2i_X509(3), d2i_X509_ALGOR(3), d2i_X509_CRL(3), d2i_X509_NAME(3), d2i_X509_REQ(3), d2i_X509_SIG(3), crypto(3), x509v3(3)

1.0.1e								    2013-02-11								   x509(3)