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Fedora LinuxWhere Can I Learn More? п‚· The manpages for passwd, useradd, usermod, userdel, groupadd, groupmod, groupdel, vipw, vigr, pwconv, grpconv, crypt (3), passwd (5), shadow (5), group (5), and gshadow (5) 4.8. Control Access to Files All Linux and Unix systems use file permissions or modes to control access to files. Fedora extends this with the user-private-group scheme, which simplifies the configuration of permissions for collaboration. There are two other mechanisms available for file access control: see Lab 8.2, "Using SELinux" and Lab 8.3, "Using Access Control Lists." 4.8.1. How Do I Do That? There are three basic file permissions: read (r) Grants permission to access the contents of a file. There are no restrictions on what can be done with the file contents, so read permission includes permission to view or process the contents of the file, as well as permission to copy the file. On a directory, read permission enables the display of the list of files in the directory; without read permission, you can access a file contained in the directory only if you know the exact name of the file. write (w) Grants permission to write to a file; this includes overwriting existing information, append to the end of the file, and truncate (shorten) the file ...» |
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