Chapter 2 Flashcards
Packages
collection of files that are installed on the computer. Once installed, most of these contain many many files
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Dependency Information
requirements of packages for one another
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Checksums
Used to verify or validity of the software. Intended to help spot disk errors
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RPM
RPM Package Monitor… because Linux loves terrible recursive acronyms
Most popular package monitor in Linux. It can even be used in some Unix systems
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Distros of Red Hat
Red Hat - for pay enterprise
CentOS - Free enterprise
Fedora - Basic home version
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Filename Components
Package Name
Version Number
Build Number
Architecture
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Yum
one of several meta-packagers. It enables you to install a package and all its dependencies easily using a single command line
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rpm operand
-i
Installs a package
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rpm operand
-U
Installs a new package or upgrades an existing one
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rpm operand
-F or –freshen
Upgrades a package only if an earlier version already exists
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rpm operand
-q
Queries a package… is it installed? what files does it contain?
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rpm operand
-V or –verify
Verifies a package and checks that its files are present and unchanged since installation
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rpm operand
-e
Uninstalls a package
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rpm operand
-b
Builds a binary package, given source code and configuration files
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rpm operand
–rebuild
Builds a binary package, given a source RPM file; moved to the rpmbuild program with RPM v4.2
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rpm operand
-rebuilddb
Rebuild the RPM database to fix errors
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rpm option
–root dir
Modifies the Linux systems having a root directory located at dir. This option can be used to maintain one Linux installation discrete from another one
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rpm option
–force
Used with operands -i, -U, -F
Forces installation of a package even when it means overwriting existing files or packages
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rpm option
-h or –hash
Used with operands -i, -U, -F
Displays a series of hash marks (#) to indicate the progress of the operation
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rpm option
-v
Used with operands -i, -U, -F
Used in conjunction with the -h option to produce a uniform number of hash marks for each package
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rpm option
–nodeps
Used with operands -i, -U, -F, -e
Specifies that no dependency checks be performed. Installs or removes the package even if it relies on a package or file that’s not present or is required by a package that’s not being uninstalled
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rpm option
–test
Used with operands -i, -U, -F
Checks for dependencies, conflicts, and other problems without actually installing the package
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rpm option
–prefix path
Used with operands -i, -U, -F
Sets the installation directory to path(works only for some packages)
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rpm option
-a or –all
Used with operands -q, -V
Queries or verifies all packages
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rpm option
-f file or –file file
Used with operands -q, -V
Queries or verifies the package that owns file
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rpm option
-p package-file
Used with operand -q
Queries the uninstalled RPM package-file
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rpm option
-i
Used with operand -q
Displays package information, including the package maintainer, a short description, and so on
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rpm option
-R or –requires
Used with operand -q
Displays the packages and files on which this one depends
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rpm option
-l or –list
Used with operand -q
Displays the files contained in the package
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