Which redhat version command

The Linux Kernel is like the central brain of the Linux operating system and can be updated independently of the operating system. The Operating System version is the release version number of the whole OS package. You may see a Red Hat version number like Red Hat 7. So Red Hat 7. After reading this article, you will know how to check or find your Red Hat operating system version in a number of ways. Finally, for more information about the Red Hat family of Linux, please see the official Red Hat d o cumentation.

Introduction Red Hat is a popular and influential fork of the Linux operating system. You can work around this non-interactive behavior of certain commands by placing a -i switch option after the command. Try the following example:. The -i makes rm interactive.

Answer with a y and the file goes away. Answer with an n and you keep the file. To be safe, you can always use the -i switch with rm. There's no harm or shame in it and you'll be glad you did at some point in the future.

Copying files and directories is a very common task for Linux system administrators. There's no great secret to its usage and you simply issue the copy cp command, the file or directory source, and the destination. To copy a file, file. To copy an entire directory and all its contents, including subdirectories, use the -R Recurse option. You can use either the -r or -R to recurse copy files:.

The cp command is rare in that both the upper- and the lowercase options for an action are the same. Of course, you can use wildcards when copying files to filter them with patterns:. If you're an organized person, you'll want to create directories to satisfy your need to properly arrange your files and data into separate compartments directories.

It's easy to create directories. Issue the mkdir command followed by the directory name you wish to create:. If you're even more organized and you've done some planning, you can create a whole hierarchy of directories with one command.

You want to create a data directory that includes subdirectories for documents, forms, tests, and outgoing. Why issue multiple commands when you can do it all at once:.

The -p option tells the system that you are creating a parent directory and subdirectories. Check your work using the ls command. You can also create multiple directories at the same level all at once. Use the ls command to be sure the mkdir command did what you wanted it to do. The last of the 10 basic Linux commands you need to know is ps. This command shows you currently running processes.

If you issue the ps command, you will only see your own processes:. If you're not running anything, then this output is not very interesting. It's far more interesting to see what's going on system-wide. You can do this by adding some options to ps. The most valuable options are -e and -f , for every all and full format, respectively.

To get the most information from the ps command, combine the two options into the following command. Home Linux. How to Determine Redhat Versions Command by cloudibee. January 30, Share on Facebook Share on Twitter. Table of Contents. Tags: Redhat. Related Posts. April 7, Top Open Source Email Servers by cloudibee. September 7, January 29, What is Cron Job in Linux? January 28, This is not reliable.

If you just cat it, the result may be underwhelming. Dan Pritts 3, 24 24 silver badges 26 26 bronze badges. This seems to work, more generically: rpm -qa ' oraclelinux sl redhat centos -release -server ' sl is for Scientific Linux; if you know the right name for other RHEL rebuilds maybe comment below.

Warning - not extensively tested. Assuming it truly is a Red Hat release not Centos : rpm -q redhat-release Or just run: uname -r And map the output. TCampbell TCampbell 1, 13 13 silver badges 14 14 bronze badges. And now that time has passed, what would be RHEL6? Here are the answers: access. Wernfried Domscheit Wernfried Domscheit 1 1 silver badge 6 6 bronze badges. Andrew Andrew 2 2 silver badges 9 9 bronze badges. Interesting, useful. Unfortunately, not present on RHEL6 so of limited value at the moment.

Tested on rhel 6.