Debian 10 systemd, how to disable autostart of graphical environments
I installed a graphical environment on a server and I have decided that I no longer want to run that environment at boot. How can I disable it with systemd?
Unix & Linux
Somehow managed to mute mplayer and can’t figure out how to restore sound
I was randomly/experimentally pressing buttons while playing a video with mplayer. Something I did caused the video to mute. I then exited the video and tried a different one, but that one was muted too. I didn’t think that mplayer saved its settings across invocations, except for the settings in .mplayer, and I certainly did not save any settings in there, nor do I see anything in there now that could be causing this.
When does a shell get executed during the linux startup process
I do not understand when does a shell, lets say bash, get executed, which program runs bash initially first.
find exec ‘{}’ not available after >
Exec allows us to either pass all arguments at once with {} + or to pass them one by one with {} ;
A start job is running for dev-disk by x2duuid : error take 1min 30s to boot Debian
I have multiboot Debian with others Unix/linux distro. During the boot process ,i get the following error:
Why isn’t this awk command doing a full outer join?
Objective: Merge the contents of two files using common key present in the files
How to fill a device with zeros, without overwriting the bytes that are already zeros?
I have a USB flash drive usb 3, the reading speed is much more than the writing speed.
Let’s say that 99% of the flash memory is already full with zeros, and I would like to fill it with zeros until 100%, by overwriting all the memory flash with zeros dd if=/dev/zero of=/dev/FLASH.
Using diff to compare the output of two commands
How does one go about using diff to compare the output of two commands?
How does the kernel prevent a malicious program from reading all of physical RAM?
If I write a program that tries to read memory at every possible address, and I run it on a “full” Unix, it will not be able to access all of the physical RAM. But how does the operating system prevent it from doing so?
Is there a linux vfs tool that allows bind a directory in different location (like mount –bind) in user space?
For a user process, I want to mount a directory in other location but in user space without root privilieges. Something like mount –bind /origin /dest, but with a vfs wrapper. Like a usermode fine-tuned chroot.