Package binaries into rpm
This is an iframe, to view it upgrade your browser or enable iframe display. Understanding the Package File 2. RPM file format 2. Querying the RPM Database 2. Running RPM Commands 2. Working with the rpm command 2. Other RPM commands 2. Understanding the package file. Working with RPM packages, files, commands, and databases can be complicated. There are thousands of files, for hundreds if not thousands of packages, installed on your system. You need some way to manage it all.
The RPM system can help you do that. This chapter provides an overview of the components that make up the RPM system for package management: Understanding the Package File.
RPM provides for installing, upgrading and removing packages. Typically, each package is an application and all the necessary files associated with that application. For example, the Apache Web server comes with a number of configuration files, a large set of documentation files, and the Apache server itself. All of this fits into one RPM package. One of the main advantages of the RPM system is that each. For example, the following file holds the mlocate package:.
Based on the naming conventions discussed in Cap. With a single command, you can copy an. RPM files hold a number of tagged data items and a payload, the files to install on your system. The tagged data items describe the package and can contain optional features. For example, the NAME tag holds the package name. The optional PRE tag holds a pre-installation script, a script that the rpm command runs prior to installing the files in the package payload.
Under the covers, RPM package files contain four sections. The first is a leading identification area that marks the file as an RPM package created with a particular version of the RPM system. The remaining sections are the signature, the tagged data called the headerand the payload.
Each of these sections has important information about the package, although the payload section contains the actual content of the package. Signature The signature appears after the lead or identifier section, which marks the file as an RPM file. Like your signature when you sign a check, the RPM signature helps verify the integrity of the package. Instead, it ensures that you have downloaded a valid RPM archive. The signature works by performing a mathematical function on the header and archive sections of the file.
The header contains zero or more tagged blocks of data that pertain to the package. The header contains information such as copyright messages, version numbers, and package summaries. The payload section contains the actual files used in the package.
These files are installed when you install the package. To save space, data in the payload section is compressed in GNU gzip format. Once uncompressed, the data is in cpio format, which is how the rpm2cpio command introduced in the "Other RPM commands" section later in this chapter can do its work. There are two main types of RPM packages: A binary RPM has been compiled for a particular architecture.
To run on both systems, you would need two separate packages: These RPMs are packages that provide the source code for other packages. Binary RPMs hold complete applications or libraries of functions compiled for a particular architecture. These application binary RPMs usually depend on a number of system libraries which are, in turn, also provided by binary RPMs.
Most Linux distributions come with more applications than you can imagine using. Although most binary RPMs are complete applications, others provide libraries. A number of programs, mostly games, use this library for enhanced multimedia such as rich graphics. RPMs that provide libraries allow multiple applications to share the same library.
Typically, the libraries are packaged into separate RPMs from the applications. Applications written in Perl, Python, or other scripting languages often do not depend on code compiled for a particular architecture. In addition, compiled Java applications are usually free of platform dependencies. The mlocate package, mentioned previously, contains the mlocate application used to search for files on the system. The source code used to create this application is stored in an mlocate source RPM, for example:.
This is a very important goal of the RPM system. Source RPMs have nothing to do with open-source software licenses. Linux is famous for being an open-source operating system. But you can also make source RPMs for proprietary programs. The key issue is that you are unlikely to distribute the source RPMs for proprietary packages. Furthermore, a number of open-source applications are not available as source RPMs. That's a shame, since source RPMs would make these applications easier to install.
For example, the compile scripts for some packages may add in optional code depending on which libraries or which versions of libraries are found on your system.
The residuals can be interpreted as the variability in age not accounted for already in the ACGs terms. Then we used these residuals in a linear and quadratic term as fixed effects in the models to explore the variability in cost. This way, the variance component for age should be interpreted as that not already explained by ACG. These models were estimated using the restricted maximum likelihood method. In a first step, a binary logistic regression using ACG as a covariate was applied to predict the incurrence of drug expenditure.
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