How do I change my own password as well as the passwords of other users as required under Linux operating system without using GUI systems?
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/etc/shadow
The default algorithm for storing password hashes in /etc/shadow is MD5. I was told to use SHA-512 hashing algorithm. How do I set password hashing using the SHA-256 and SHA-512 under CentOS or Redhat Enterprise Linux 5.4?
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How do I add a user to a group under Sun Solaris UNIX operating system from a shell prompt or command line?
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Q. Can you explain /etc/shadow file used under Linux or UNIX?
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