Install DNF in RHEL/CentOS 7 DNF stands for Dandified yum. DNF is a software package manager for RPM-based Linux distributions such as Fedora, RHEL and CentOS. It is the next upcoming major version of Yum. DNF is first introduced in Fedora and has replaced to become the default package manager of the Fedora distributions. DNF is same as Yum that installs, updates and removes packages on RPM bas4ed Linux systems. DNF is introduced for improving the bottlenecks of Yum such as performance, Memory usages, Dependency resolution, speed, and some other factors. The latest stable release of DNF is 1.0 and it is written in Python. Installation of DNF in RHEL/CentOS 7 1) To install DNF on RHEL/CentOS 7 systems, you need to set up and enable epel YUM REPO before installing DNF. # yum install epel-release 2) Install DNF # yum install DNF 3) You can now start to run commands using DNF. To view the man page you can use the following command: # dnf –help
Creating JAR file in Eclipse Before proceeding to work on creating a lambda function in AWS, we need AWS toolkit support for Eclipse. For any guidance on installation of the same, you can refer to the Environment Setup chapter in this tutorial. Once you are done with installation, follow the steps given here − Step 1 Open Eclipse IDE and create a new project with AWS Lambda Java Project . Observe the screenshot given below for better understanding − Step 2 Once you select Next , it will redirect you the screen shown below − Step 3 Now, a default code is created for Input Type Custom . Once you click Finish button the project gets created as shown below − Step 4 Now, right click your project and export it. Select Java / JAR file from the Export wizard and click Next . Step 5 Now, if you click Next , you will be prompted save the file in the destination folder which will be asked when you click on next. Once the...
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