What is a spec file?

Posted on by Emilia Duggan

What is a spec file?

Spec files are plain-text files that are used to construct spec strings. They consist of a sequence of directives separated by blank lines. The type of directive is determined by the first non-whitespace character on the line, which can be one of the following: % command. Issues a command to the spec file processor.

What is spec file in RPM?

The spec file, short for specification file, defines all the actions the rpmbuild command should take to build your application, as well as all the actions necessary for the rpm command to install and remove the application. Each source RPM should have the necessary spec file for building a binary RPM.

How do I create a spec file?

2.2. 1. Creating an Example Spec File for eject

  1. In a shell prompt, go into the buildroot and create a new spec file for your package.
  2. Open the spec file in a text editor.
  3. Edit the Release tag to set the release value of the package.
  4. Fill in the version and add a summary of the software:

How do I check my RPM spec?

spec file will be in your current directory. If you can’t install yum-utils for some reason, look at the files in /etc/yum. repos. d/ and look for sections referring to source rpm repositories.

What is Rpmbuild in Linux?

rpmbuild is used to build both binary and source software packages. A package consists of an archive of files and meta- data used to install and erase the archive files. The meta-data includes helper scripts, file attributes, and descriptive information about the package.

How do I open a spec file?

How to open file with SPEC extension?

  1. Download and install Text editor.
  2. Update Text editor to the latest version.
  3. Associate RPM Specification Format files with Text editor.
  4. Verify that the SPEC is not faulty.

How do I write a RPM spec file?

You can create your spec file by simply copying an existing spec file and modifying it. As an alternative, you can use the vim or emacs command to open any new file that ends in . spec. The editor will automatically create a template within the new file for writing an RPM spec file.

How do I create a spec TS file?

Select an Angular *. ts file and use right click to generate the spec file. Generate spec (jest / jasmine / mockito / empty) files for Angular elements: component.

How do I list files in an RPM?

List files in an RPM package file using the rpm command. In this example, the rpm command is used with the flag -q to specify it as a query command, -l to list the files in the package, and -p so it knows to query the uninstalled package file.

How do I find the rpm of a file?

To show what files are in a package, use the rpm command. If you have the file name, you can turn this around and find the related package. The output will provide the package and its version. To just see the package name, use the –queryformat option.

What package is Rpmbuild?

rpmbuild command is part of rpm-build package. Install it as shown show below. rpm-build is dependent on the following package.

How do I unpack an RPM file?

Unpacking RPM packages

  1. Obtain the package.
  2. Go to your home directory: cd.
  3. Unpack the package: rpm2cpio myrpmfile.rpm | cpio -idmv.
  4. (Only once) Add ~/usr/bin to your PATH environment variable and add ~/usr/lib64 to your LD_LIBRARY_PATH environment variable.

How to build RPM packages in Linux?

How to build rpm packages 1 Preparation. First, open one terminal session and su to root. 2 Creating the build directory structure. The rpmbuild command requires a very specific directory structure. 3 Examining the spec file. 4 Building the rpm. 5 Testing the rpm. 6 Experimenting. 7 Conclusion. 8 Resources.

What is Buildroot in rpmbuild?

The BuildRoot line specifies the top-level directory in which the rpmbuild tool will find the spec file and in which it will create temporary directories while it builds the package. The finished package will be stored in the noarch subdirectory that we specified earlier.

What is the path to the RPM_build_root directory?

The directories created in the $RPM_BUILD_ROOT directory are fully qualified paths, such as /user/local/share/utils, /usr/local/bin, and so on, in a live filesystem. In the case of our package, we have no pre-compile sources as all of our programs are Bash scripts.

How to display dependencies and provides of an uninstalled RPM Package?

Afterall, you may display dependencies and provides of an uninstalled rpm package with rpm –query –requires –package and rpm –query –provides –package. Installed packages’ deps are shown with rpm –query –requires and so on.