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NOS220 Review (Ch4)
Linux Study Guide - Linux Filesystem Management
| Question | Answer |
|---|---|
| /bin directory | The directory that contains binary commands for use by all users. |
| /boot directory | The directory that contains the Linux kernel and files used by the boot loader data block. |
| /dev directory | The directory that contains device files. |
| /etc directory | The directory that contains system-specific configuration files. |
| /home directory | The default location for user home directories. |
| /lib directory | The directory that contains shared program libraries (used by the commands in /bin and /sbin) as well as kernel modules. |
| /media directory | A directory typically used for mounting removable media devices. |
| /mnt directory | An empty directory used for temporarily mounting media. |
| /opt directory | The directory that stores additional software programs. |
| /proc directory | The directory that contains process and kernel information. |
| /root directory | The root user’s home directory. |
| /sbin directory | The directory that contains system binary commands (used for administration). |
| /tmp directory | The directory that holds temporary files created by programs. |
| /usr directory | The directory that contains most system commands and utilities. |
| /usr/local directory | The location for most additional programs. |
| /var directory | The directory that contains log files and spools. |
| chgrp (change group) command | The command used to change the group owner of a file or directory. |
| chmod (change mode) command | The command used to change the mode (permissions) of a file or directory. |
| chown (change owner) command | The command used to change the owner and group owner of a file or directory. |
| cp (copy) command | The command used to create copies of files and directories. |
| data blocks | A filesystem allocation unit in which the data that makes up the contents of the file as well as the filename are stored. |
| Filesystem Hierarchy Standard (FHS) | A standard outlining the location of set files and directories on a Linux system. |
| find command | The command used to find files on the filesystem using various criteria. |
| Group | When used in the mode of a certain file or directory, the collection of users who have ownership of that file or directory. |
| hard link | A file joined to other files on the same filesystem that shares the same inode. |
| Inode | The portion of a file that stores information on the file’s attributes, access permissions, location, ownership, and file type. |
| inode table | The collection of inodes for all files and directories on a filesystem. |
| interactive mode | The mode that file management commands use when a file can be overwritten; the system interacts with a user, asking the user to confirm the action. |
| ln (link)command | The command used to create hard and symbolic links. |
| locate command | The command used to locate files from a file database. |
| mkdir (make directory) command | The command used to create directories. |
| Mode | The part of the inode that stores information on access permissions. |
| mv (move) command | The command used to move/rename files and directories. |
| Other | When used in the mode of a certain file or directory, it refers to all users on the Linux system. |
| Owner | The user whose name appears in a long listing of a file or directory and who has the ability to change permissions on that file or directory. |
| PATH variable | A variable that stores a list of directories that will be searched in order when commands are executed without an absolute or relative pathname. |
| Permissions | A list that identifies who can access a file or folder and their level of access. |
| primary group | The default group to which a user belongs. |
| Recursive | A term referring to itself and its own contents; a recursive search includes all subdirectories in a directory and their contents. |
| rm (remove) command | The command used to remove files and directories. |
| rmdir (remove directory) command | The command used to remove empty directories. |
| source file/directory | The portion of a command that refers to the file or directory from which information is taken. |
| Superblock | The portion of a filesystem that stores critical information, such as the inode table and block size. |
| symbolic link | A pointer to another file on the same or another filesystem; commonly referred to as a shortcut. |
| target file/directory | The portion of a command that refers to the file or directory to which information is directed. |
| touch command | The command used to create new files. It was originally used to update the time stamp on a file. |
| Umask | A special variable used to alter the permissions on all new files and directories by taking away select default file and directory permissions. |
| umask command | The command used to view and change the umask variable. |
| User | When used in the mode of a certain file or directory, the owner of that file or directory. |
| which command | The command used to locate files that exist within directories listed in the PATH variable. |
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