Introduction
In this tutorial we learn how to install byteman on CentOS 8.
What is byteman
Byteman is a tool which simplifies tracing and testing of Java programs. Byteman allows you to insert extra Java code into your application, either as it is loaded during JVM startup or even after it has already started running. The injected code is allowed to access any of your data and call any application methods, including where they are private. You can inject code almost anywhere you want and there is no need to prepare the original source code in advance nor do you have to recompile, repackage or redeploy your application. In fact you can remove injected code and reinstall different code while the application continues to execute.
We can use yum or dnf to install byteman on CentOS 8. In this tutorial we discuss both methods but you only need to choose one of method to install byteman.
Install byteman on CentOS 8 Using dnf
Update yum database with dnf using the following command.
sudo dnf makecache --refresh
The output should look something like this:
CentOS Linux 8 - AppStream 43 kB/s | 4.3 kB 00:00
CentOS Linux 8 - BaseOS 65 kB/s | 3.9 kB 00:00
CentOS Linux 8 - ContinuousRelease 43 kB/s | 3.0 kB 00:00
CentOS Linux 8 - Extras 23 kB/s | 1.5 kB 00:00
CentOS Linux 8 - FastTrack 40 kB/s | 3.0 kB 00:00
CentOS Linux 8 - HighAvailability 36 kB/s | 3.9 kB 00:00
CentOS Linux 8 - Plus 24 kB/s | 1.5 kB 00:00
CentOS Linux 8 - PowerTools 50 kB/s | 4.3 kB 00:00
Extra Packages for Enterprise Linux Modular 8 - x86_64 13 kB/s | 9.2 kB 00:00
Extra Packages for Enterprise Linux 8 - x86_64 24 kB/s | 8.5 kB 00:00
Metadata cache created.
After updating yum database, We can install byteman using dnf by running the following command:
sudo dnf -y install byteman
Install byteman on CentOS 8 Using yum
Update yum database with yum using the following command.
sudo yum makecache --refresh
The output should look something like this:
CentOS Linux 8 - AppStream 43 kB/s | 4.3 kB 00:00
CentOS Linux 8 - BaseOS 65 kB/s | 3.9 kB 00:00
CentOS Linux 8 - ContinuousRelease 43 kB/s | 3.0 kB 00:00
CentOS Linux 8 - Extras 23 kB/s | 1.5 kB 00:00
CentOS Linux 8 - FastTrack 40 kB/s | 3.0 kB 00:00
CentOS Linux 8 - HighAvailability 36 kB/s | 3.9 kB 00:00
CentOS Linux 8 - Plus 24 kB/s | 1.5 kB 00:00
CentOS Linux 8 - PowerTools 50 kB/s | 4.3 kB 00:00
Extra Packages for Enterprise Linux Modular 8 - x86_64 13 kB/s | 9.2 kB 00:00
Extra Packages for Enterprise Linux 8 - x86_64 24 kB/s | 8.5 kB 00:00
Metadata cache created.
After updating yum database, We can install byteman using yum by running the following command:
sudo yum -y install byteman
How To Uninstall byteman on CentOS 8
To uninstall only the byteman package we can use the following command:
sudo dnf remove byteman
byteman Package Contents on CentOS 8
/usr/bin/bmcheck
/usr/bin/bminstall
/usr/bin/bmjava
/usr/bin/bmsubmit
/usr/share/byteman/bin/bmcheck
/usr/share/byteman/bin/bminstall
/usr/share/byteman/bin/bmjava
/usr/share/byteman/bin/bmsubmit
/usr/share/byteman/contrib/jboss-modules-system
/usr/share/byteman/contrib/jboss-modules-system/byteman-jboss-modules-plugin.jar
/usr/share/byteman/lib/byteman-install.jar
/usr/share/byteman/lib/byteman-sample.jar
/usr/share/byteman/lib/byteman-submit.jar
/usr/share/byteman/lib/byteman.jar
/usr/share/doc/byteman
/usr/share/doc/byteman/README
/usr/share/java/byteman
/usr/share/java/byteman/byteman-agent.jar
/usr/share/java/byteman/byteman-install.jar
/usr/share/java/byteman/byteman-jboss-modules-plugin.jar
/usr/share/java/byteman/byteman-jigsaw.jar
/usr/share/java/byteman/byteman-layer.jar
/usr/share/java/byteman/byteman-sample.jar
/usr/share/java/byteman/byteman-submit.jar
/usr/share/java/byteman/byteman.jar
/usr/share/licenses/byteman
/usr/share/licenses/byteman/copyright.txt
/usr/share/maven-metadata/byteman.xml
/usr/share/maven-poms/byteman
/usr/share/maven-poms/byteman/byteman-agent.pom
/usr/share/maven-poms/byteman/byteman-install.pom
/usr/share/maven-poms/byteman/byteman-jboss-modules-plugin.pom
/usr/share/maven-poms/byteman/byteman-jboss-modules.pom
/usr/share/maven-poms/byteman/byteman-jigsaw.pom
/usr/share/maven-poms/byteman/byteman-layer.pom
/usr/share/maven-poms/byteman/byteman-root.pom
/usr/share/maven-poms/byteman/byteman-sample.pom
/usr/share/maven-poms/byteman/byteman-submit.pom
/usr/share/maven-poms/byteman/byteman.pom
/usr/share/maven-poms/byteman/tests.pom
References
Summary
In this tutorial we learn how to install byteman on CentOS 8 using yum and dnf.
