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A family of Unix-like operating systems using the Linux kernel. If your question is about a certain distribution only, use a more specific tag.

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Changing the default boot option in the boot menu

How do I change the boot options so that I can boot from USB?
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Redirecting URLs in /etc/hosts

In my /etc/hosts file, I have the following line: 127.0.0.1 www.reddit.com When I open www.reddit.com in chrome, it still displays normally. When I open www.reddit.com in an a chrome incognito ...
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Shrinking a RAID1 to free up space on the HDD for a new RAID1 Partition

I set up a webserver a while ago and made a mistake. I do have the following: /dev/md0 swap (made from sda1 and sdb1) /dev/md1 /boot (made from sda2 and sdb2) /dev/md2 / (made from sda3 and sdb3)...
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Centos 7: No WiFi Adapter Found

I have a 2 part question: I have dual booted Centos 7 with windows 10. Once Centos 7 setup is finished No WiFi connection is available. In settings > Wifi it gives the message: No WiFi adapter ...
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1answer
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How to increase VirtualBox CentOS 6.5 disk size?

I have a VM that I initially set up with 4 GB memory and successfully increased it to 8 GB (by getting rid of lv_swap and running lvextend). However, I'm now trying to increase it to 10 GB and am ...
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1answer
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How to execute something in terminal with URI Scheme? (vagrant:// …)

How can I run something through my own terminal that starts with a URI Scheme? For example, when running IntelliJ's Phpstorm with Vagrant, executing code tests from Phpstorm outputs something like: ...
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WiFi USB adapter works in just one slot of my laptop

I have a TP-Link WiFi USB adapter (model: TP-WN725N) which I use with a low end HP laptop (model HP 650, four years old). The OS of the laptop is Debian 9.4. I used to plug the WiFi adapter to the ...
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1answer
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How does `pv` know the destination disk's size?

I recently zeroed a drive with the following command: # pv /dev/zero > /dev/sdd Looking at the throughput and time remaining according to pv, it correctly estimated/calculated/knew the size of ...
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How to disable Ctrl+Shift+U in Ubuntu 18.04? [duplicate]

How to disable ctrl+shift+u shortcut in Ubuntu 18.04? Solution from answer no longer works in Ubuntu 18.04.
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Samba Share Regularly Hangs for Win 10 Client

I'm running samba 4.77 on Fedora 27 with Kernel 4.16.12. I've got a fairly basic samba config, which I have posted below. I use Windows 10 clients. This problem only ever seems to happen on my samba ...
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avahi mdns not working on all systems

I have three systems running Fedora, named: dragon, wyvern and griffin. I am seeing strange mdns behaviour: From dragon, I can ping and ssh to all of dragon.local, wyvern.local and griffin.local ...
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what does device called /dev/fbsnap0 works for in linux?

As title I google it but find nothing mentions it detaily. I saw lots device in /dev/ such as /dev/fbsnap0, /dev/fbsnap1...etc Does anyone can explain?
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2answers
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Emulating Alt ASCII codes in Linux

I have an Alphasmart Neo, which emulates a keyboard when connected to a computer to send text files. It basically works like a very fast typist. When it hits an accented character it tries to use the ...
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0answers
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CentOS Virtualbox Alt Left

I'm using CentOS on Virtualbox, and I find that I press Alt+Left or Alt+Right, the screen will change cyclely, seems like mutiple virtual desktop of CentOS. Is it really the virtual desktop of CentOS?...
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Done everything to forward ports, still closed

I'm on Linux Mint 18.3 with a wireless router given by my ISP provider and I've been trying port forwarding to no avail. This is a problem that I've had for a long time. Among other things, netstat -...

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