Linux Study Guide - Compression, System Backup, & Software Installation
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| *sum commands | Commands that can be used to verify the checksum on a file where * represents the checksum algorithm. For example, to verify a SHA-1 checksum, you could use the sha1sum command.
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| /etc/dumpdates | The file used to store information about incremental and full backups for use by the dump/restore utility.
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| archive | The location (file or device) that contains a copy of files; it is typically created by a backup utility.
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| bunzip2 command | The command used to decompress files compressed by the bzip2 command.
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| bzcat command | A command used to view the contents of an archive created with bzip2 to SO.
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| bzip2 command | The command used to compress files using a Burrows-Wheeler Block Sorting Huffman Coding compression algorithm.
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| bzless command | A command used to view the contents of an archive created with bzip2 to SO in a page-by-page fashion.
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| bzmore command | A command used to view the contents of an archive created with bzip2 to SO in a page-by-page fashion.
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| checksum | A calculated value that is unique to a file’s size and contents.
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| compress command | The command used to compress files using a Lempel-Ziv compression algorithm.
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| compression | The process in which files are reduced in size by a compression algorithm.
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| compression algorithm | The set of instructions used to reduce the contents of a file systematically.
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| compression ratio | The amount of compression that occurred during compression.
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| cpio (copy in/out) command | A command used to run a common backup utility.
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| Debian Package Manager (DPM) | A package manager used on Debian and Debian-based Linux distributions.
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| dump command | A command used to run a utility that creates full and incremental backups.
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| full backup | An archive of an entire filesystem.
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| GNU C Compiler (gcc) command | The command used to compile source code written in the C programming language into binary programs.
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| GNU zip (gzip) command | A command used to compress files using a Lempel-Ziv compression algorithm.
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| gunzip command | The command used to decompress files compressed by the gzip command.
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| incremental backup | An archive of a filesystem that contains only files that were modified since the last archive was created.
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| KPackageKit utility | A program that can be used to install, update, and remove RPM packages within a desktop environment.
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| package dependencies | A list of packages that are prerequisite to the current package being installed on the system.
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| package manager | A system that defines a standard package format and can be used to install, query, and remove packages.
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| Red Hat Package Manager (RPM) | The most commonly used package manager for Linux.
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| restore command | The command used to extract archives created with the dump command.
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| rpm command | The command used to install, query, and remove RPM packages.
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| software mirrors | Software repositories that host the same RPM or DPM packages as other software repositories for fault tolerance and load balancing of download requests.
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| software repositories | Servers on the Internet that host RPM or DPM packages for download.
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| system backup | The process whereby files are copied to an archive.
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| tape archive (tar) command | The most common command for creating archives.
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| tarball | A gzip-compressed tar archive.
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| uncompress command | The command used to decompress files compressed by the compress command.
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| yum (Yellowdog Updater Modified) command | A program used to install and upgrade software packages.
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| zcat command | A command used to view the contents of an archive created with compress or gzip to SO.
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| zless command | A command used to view the contents of an archive created with compress or gzip to SO in a page-by-page fashion.
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| zmore command | A command used to view the contents of an archive created with compress or gzip to SO in a page-by-page fashion.
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