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A system administrator (or sysadmin) is an IT professional responsible for the maintenance, configuration, and reliable operation of an organization's computer systems, including servers, operating systems, software, and networks
Q808: Troubleshooting: What is 'certificate revocation'?
Q809: Linux: What is the primary purpose of the 'chown' command?
Q810: Security: What does the term 'defense in depth' refer to in system administration?