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To add to the confusion, next to no-one seems to call Android "Linux", even though it uses the Linux kernel, just with a significantly different userspace from other common Linux systems (e.g. Debian). How is RedHat Enterprise Linux different from Linux? RHEL is an operating system that uses (the) Linux (kernel) as one component, the kernel.
Since this question is RPM specific, rpm is the way to get started (as answered by @Matteo). rpm flags-q is short for --query -l is short for --list
I work in an environment where we are slowly transitioning machines from Red Hat Enterprise Linux 5 to RHEL 6. I need some of my scripts to do something subtly different on RHEL6 machines to what is currently being done on RHEL5 machines. The pragmatic solution is to check at runtime and run some commands on RHEL5, others on RHEL6 and some on both.
To switch from CLI to GUI: systemctl isolate graphical.target. To set the CLI as a default runlevel (target in systemd terminology): systemctl set-default multi-user.target. Analogously for GUI: systemctl set-default graphical.target. *CLI = Command Line Interface = command-line mode. Share. Improve this answer.
@kinkajou lots of professional experience as well as a lot of time spent on sites such as this one and IRC Linux support. I have been a professional and an enthusiast for about 8 years. I think being an enthusiast is an important part because you are more likely to remember things that you care about. –
From this link, it's saying : "The Red Hat Developer Subscription for Individuals is a single subscription, which allows the user to install Red Hat Enterprise Linux on a maximum of 16 systems, physical or virtual, regardless of system facts and size."
I spend most of my time working in Unix environments and using terminal emulators. I try to use color on the command line, because color makes the output more useful and intuitive.
The reason that a Linux distribution is "free" is that many of the pieces of software it includes are covered by the GNU General Public License (GPL for short). There are two different types of "free": The GPL is about the first "freedom", not the second. Provided Red Hat release the source code, then they are probably complying with the license.
To compile an object file on the command line, run the following command: scl enable devtoolset-1.1 'g++ -o object_file -c source_file'. This creates an object file named object_file. If the -o option is omitted, the g++ compiler creates a file named after the source file with the .o file extension.
@spemble Well, sure, but even at the time I wrote that, Red Hat Linux 9 (the last release) had been out of support for almost seven years. Now, it's been fourteen. The number of unpatched local and remote exploits is horrifying to consider. –