Tag: system

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How to convert VirtualBox vdi to KVM qcow2

VBoxManage can't directly convert vdi to qcow2, so there is two options : With VBoxManage convert vdi to raw and with qemu-img convert raw to qcow2 With qemu-img convert vdi to qcow2 Notes : vdi are

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FreeBSD 10.3 is here

FreeBSD update to version 10.3. Main improvments: 15 security flaws patched UEFI support Gnome 3.16.2 Full Release Notes on official FreeBSD website.

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OpenBSD 5.9 is here

OpenBSD update to version 5.9. Main improvments: Pledge - a new mitigation mechanism process in restricted mode security improved 70% of user components converted WiFi 802.11n multithread network

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Examine the codes sent by the keyboard

A usefull command if are want to read keyboard input : showkey. Very useful to know keycodes when programming. What is showkey ? showkey - examine the codes sent by the keyboard How does it work ? sho

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How to change of terminal in command-line with Linux

Changing of TTY (TeleTYpewriter), text console or text terminal without keyboard shortcut may be useful for remote administration or virtualization. So to change of TTY in CLI (Command-Line Interface)

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How to know the graphic controller under Linux

To know your 3D graphic(s) controller(s) working (GPU or/and chipset) with your VGA output you can run the following command : 1/sbin/lspci | egrep 'VGA|3D' Example : 123/sbin/lspci | egrep 'VGA|3D'00

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Know status and health battery in command-line

To see your battery infos you can use acpi if you have it or directly see system files. Upower command In both case you can use upower command to get some usefull infos: 1upower -i /org/freedesktop/UP