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How to disable linux serial console?
In order to disable serial console for the Linux Kernel you can either recompile it with the support disabled, or you can alter the bootargs the bootloader passes to the kernel to disable it at runtime.
How to disable the serial console?
The serial console can be disabled for a specific VM or virtual machine scale set by disabling the boot diagnostics setting. Turn off boot diagnostics from the Azure portal to disable the serial console for the VM or the virtual machine scale set.
How to enable serial console in linux?
To enable the serial console for your custom Linux VM image, enable console access in the file /etc/inittab to run a terminal on ttyS0 . For example: S0:12345:respawn:/sbin/agetty -L 115200 console vt102 . You may also need to spawn a getty on ttyS0. This can be done with systemctl start [email protected] .
What is console redirection?
Console redirection allows you to maintain a server from a remote location by re-directing keyboard input and text output through the serial port. Console redirection can be used under MS-DOS® for tasks such as setting up a common BIOS configuration or setting up a RAID configuration.
How do I log into the console in Linux?
They all can be accessed using the key combination Ctrl + Alt + FN#Console. For example, the Console #3 is accessed by pressing Ctrl + Alt + F3. Note The Console #7 is usually allocated to the graphical environment (Xorg, etc.). If you are running a desktop environment, you may want to use a terminal emulator instead.
How do I enable serial console in Ubuntu?
Configuring grub
- Edit /boot/grub/menu.lst: vi /boot/grub/menu.lst.
- Add the following lines to the top of the file: # Enable console output via the serial port.
- When you next reboot, the output from grub will go to the normal console unless input is received from the serial port.
What is another name for the Linux Terminal?
The Linux command line is a text interface to your computer. Often referred to as the shell, terminal, console, prompt or various other names, it can give the appearance of being complex and confusing to use.
What is difference between console and terminal?
The term terminal can also refer to a device that allows users to interact with computers, typically via a keyboard and display. A console is a physical terminal that is the primary terminal that is directly connected to a machine. The console is recognized by the operating system as a (kernel-implemented) terminal.
Should I disable unused SATA ports?
I typically disable unused SATA ports since it’ll help slightly with POST times on some systems. I also make sure to set my hard drive as the first boot device, this sometimes saves a second or two on boot times.
How to disable serial console ( non-kernel ) in Linux?
By default, Edison’s UART port is used for u-boot console. I want to disable this feature, but only on the serial interface (u-boot also listens on USB and that needs to stay).
Which is serial console access is enabled in Linux?
Serial Console Linux distribution availability Distribution Serial console access Red Hat Enterprise Linux Serial console access enabled by default CentOS Serial console access enabled by default Debian Serial console access enabled by default Ubuntu Serial console access enabled by default
How to create a serial console for Linux?
You can create one with the reset password function of the VM access extension. Select Reset password from the Support + troubleshooting section. Your VM or virtual machine scale set instance must have boot diagnostics enabled. For settings specific to Linux distributions, see Serial console Linux distribution availability.
What happens when a command is written to a serial console?
However, if commands run within the console contain or output passwords, secrets, user names, or any other form of personally identifiable information (PII), those will be written to the VM boot diagnostics logs. They will be written along with all other visible text, as part of the implementation of the serial console’s scroll back function.