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Linux system administration skills assessment.A guide to installing applications on Linux.Download RHEL 9 at no charge through the Red Hat Developer program.At the command line, you type vi to create a new file, or to edit an existing one. Vi is often a symbolic link to Vim (Vi Improved) or an alias to Vim, an enhanced version of Vi. You can use it to edit configuration files, create a grocery list, write a letter home to ask for money, create a new script, or even edit source code. This advanced, yet straightforward command-line editing program shows no sign of slowing down. Gray at the temples and in need of reading glasses, the middle-aged Vi (pronounced vee-eye) editor, released in 1976, is still a system administrator's best friend.
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