Does tar actually compress files, or just group them together?
I usually assumed that tar was a compression utility, but I am unsure, does it actually compress files, or is it just like an ISO file, a file to hold files?
Unix & Linux
Understanding the output of –info=progress2 from rsync
If I run rsync with --info=progress2, I get an output like
Connect to running qemu instance with qemu monitor
I’m having an instance of qemu running on Windows 7, running without an open terminal. Now I want to shutdown the machine with the name MyMachineName or add an USB-Device to it.
I need a scriptable solution. Libvirt is not a solution, because it has other disadvantages for my system.
How do I open an incognito bash session?
Is it possible to open an incognito session in bash?
Command to list all monospace fonts known to fontconfig
I’d like to have a list of all the monospace fonts that fontconfig knows of,
which command do I have to use?
Kernel socket structure and TCP_DIAG
I’m working on a software which connects to a Real Time data server (using TCP) and I have some connections dropping. My guess is that the clients do not read the data coming from the server fast enough. Therefore I would like to monitor my TCP sockets. For this I found the “ss” tool.
Conceptual difference between Linux and (Free)BSD Kernel
(I’ve already noticed that this question was asked before but I think it has not been answered in a way I’d like to understand the topic.)
How to efficiently generate large, uniformly distributed, random integers in bash?
I have been wondering what would be the best way to get good randomness in bash, i.e., what would be a procedure to get a random positive integer between MIN and MAX such that
Create a test file with lots of zero bytes
I know how to create an empty file:
How does !! work in bash?
Very useful when you forget a sudo at the beginning of your command, !! acts like an alias of the previous command. Example :