fields is a tool for selecting columns of text. One or more individual columns and/or ranges of columns can be selected by index. Indexes can be positive (counting from the left) or negative (counting from the right). Ranges can bounded or unbounded (e.g. select all input to the left or right of N).
The packages for RHEL 8 and RHEL 7 are in each distribution’s respective Extra Packages for Enterprise Linux (EPEL) repository. The instructions for adding this repository diverge slightly between RHEL 8 and RHEL 7, which is why they’re listed separately below.
The EPEL repository can be added to RHEL 8 with the following command: