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Linux Security Capabilities

In earlier times, the standard security model for GNU/Linux and Unix operating systems gave general users a minimal set of privileges, while granting full privileges to a single user account, i.e. root, that was used to administer the system and users, install software, mount and unmount filesystems, loading kernel modules, bind a process to a privileged port and run many services. This dependence upon the root account to perform all actions requiring privilege was recognized to be somewhat dangerous in that it was all or nothing and not suited to compartmentalization of roles.  Furthermore, it increased the risk of vulnerabilities