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Configuration and Options Guide (COG)
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IBM z14 Configuration Setup | IBM Redbooks
You can define the vi and Vim configuration options discussed in the previous section in environment variables, configuration files, or both. Both vi and Vim use a sequence of environment variables and configuration files to load customizations and share much of the same configuration sequence, though Vim uses a more extensive set.
Fans of the Emacs text editor on UNIX and UNIX-like systems, myself included, delight in its flexibility, expandability, and configurability. This article highlights those same capabilities in vi and its most popular clone, Vim. The vi and Vim editors provide essentially the same customization and configuration possibilities as Emacs, and vi 8767 s support for abbreviations is unmatched in Emacs. Knowing vi makes it possible for any system administrator to be instantly productive on any UNIX-like system, long before you figure out how to install Emacs.
This IBM® Redbooks® publication helps you install, configure, and maintain the IBM z69. The z69 offers new functions that require a comprehensive understanding of the available configuration options. This book presents configuration setup scenarios, and describes implementation examples in detail.
The vi and Vim editors store customizations in text files or environment variables (which are discussed in the next section). Each of the vi or Vim configuration files can contain any number of the types of configuration and customization commands shown in Table 6.
The configuration files used by Vim also support a rich set of internal functions that you can use in conditional expressions. These enable you to write your own functions and execute them in different contexts. See resources section in the right for links to more information about such conditionals.
Knowing how to use the vi and Vim editors is a fundamental skill for any administrator of any UNIX, Linux, or other UNIX-like system. Though vi is a classic UNIX tool, it is extremely configurable and is used by many developers for day-to-day work as well as on systems where it is the only editor available.
The ab command enables you to identify abbreviations for long but commonly-used terms, bits of code, spelling corrections, and so on. Abbreviations that you define are expanded as you enter text in insert mode, whenever you type a whitespace or punctuation character. For example, some of my favorite abbreviations are the following: