Linux is started around 1991 by Linus Torvalds. Open Source Linux is a multi-user & multi-tasking OS. Linux is "Case-sensitive". Linux distributions : Redhat Centos Ubuntu SusLinuxux Mandriva Ferodo Debian Gentoo Slackware Linux File Structure: home: Users' information Reddy Rama Lakshmi Krishna bin: Contains of binary files (ls,mkdir,cd....etc) sbin: System-bin (Contains of binary files) bin: Normal Users can access sbin, bin: Root user can access Types of users: Admin User-----------Super User--Root User Normal User System User---------[ After installing the packages System user will create them automatically ] etc: All configuration files ---------------------------------[ password,shadow,group & sshd_Config...
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