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 : /sbin/lspci | egrep 'VGA|3D' Example : /sbin/lspci | egrep 'V
noraj (Alexandre ZANNI) - Cybersecurity engineer & Pentester
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: upower -i /org/freedesktop/UP
DISPLAYMANAGER and WINDOWSMANAGER
Change of Display Manager# Pass root sudo -i Then open /etc/sysconfig/displaymanager with a text editor. vim /etc/sysconfig/displaymanager Display Manager can be changed at line DISPLAYMANAGER="X
Reach the command line interface (text mode) at boot time
This work with Grub2: When you are on the bootloader, hover over your distribution name and press e (e for edit) You can now add options in the window that just opened On the line beginning with linu
Variables type size and formaters in C
Variables# Type Size Min Max signed char 8 bits -128 +127 unsigned char 8 bits 0 +255 short 16 bits -32,768 +32,767 unsigned short 16 bits 0 +65,535 int 16 bits -32,768 +32,767 unsign