Linux system administration skills assessment.
A guide to installing applications on Linux.
Download RHEL 9 at no charge through the Red Hat Developer program. On CentOS and RHEL, you can sometimes find the latest version from EPEL. On CentOS, RHEL, and Fedora, you can install GNU Parallel from your software repository: $ sudo dnf install parallel One way to honor those who suffered on single-core machines is to use GNU Parallel, the seemingly magical command parser that can execute a task on several files simultaneously. When you run a command, you owe it to the brave sysadmins of the past to put all those cores to good use. Today, your computer may still only have a single physical CPU, but that one CPU has multiple cores for data processing. There was a time in ancient computer history when a computer only had one CPU.
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