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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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2answers
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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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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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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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iptables: block igmp packets from being streamed-out of certain interfaces

Board has one eth and two wifi radios (eth0, wifi0, wifi1). IGMP packets may be streamed into the board through either eth or wifi. We extend the eth by bridging to wifi interfaces, and repeat a wifi ...

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