Linux - Revision history

Stefan at 13:35, 9 May 2025

2025-05-09T13:35:23Z

← Older revision		Revision as of 13:35, 9 May 2025
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	Investigate your current setup with:		Investigate your current setup with:
	lsblk		lsblk
			ls -l /dev/mapper

	Then you can perform operations like these (which reduces size of live-root with 50GB and extends size of live-home with 50GB):		Then you can perform operations like these (which reduces size of live-root with 50GB and extends size of live-home with 50GB):
	lvreduce -r -L -50G /dev/mapper/nobara_localhost--live-root		sudo lvreduce -r -L -50G /dev/mapper/nobara_localhost--live-root
	lvextend -r -L +50G /dev/mapper/nobara_localhost--live-home		sudo lvextend -r -L +50G /dev/mapper/nobara_localhost--live-home

			The "-r" option above should make sure to resize the actual file system that resides in that logical volume. If it does not, or you want to do it manually, you can things such as:

			===== ext4 =====
			sudo resize2fs /dev/mapper/nobara_localhost--live-home

			===== xfs =====
			sudo xfs_growfs -d /dev/mapper/nobara_localhost--live-home

	==== How to extend your LVM swap ====		==== How to extend your LVM swap ====

2025-03-31T06:48:51Z

How to extend your LVM swap

← Older revision		Revision as of 06:48, 31 March 2025
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	cat /proc/swaps		cat /proc/swaps
	lsblk		lsblk
	Then turn off all swaps:		Then turn off all swaps, resize the swap partition, re-format it as swap and enable it again:
	sudo swapoff -a		sudo swapoff -a
	~~Resize the swap partition, re-format it as swap and enable it again:~~
	sudo lvresize -L +24G /dev/mapper/vg0-swap		sudo lvresize -L +24G /dev/mapper/vg0-swap
	sudo mkswap /dev/mapper/vg0-swap		sudo mkswap /dev/mapper/vg0-swap

2025-03-31T06:47:38Z

LVM

@@ Line 269: / Line 269: @@
   lvreduce -r -L -50G /dev/mapper/nobara_localhost--live-root
   lvextend -r -L +50G /dev/mapper/nobara_localhost--live-home
 == Linux performance ==

2025-03-14T13:27:30Z

← Older revision		Revision as of 13:27, 14 March 2025
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	termcapinfo xterm ti@:te@		termcapinfo xterm ti@:te@


			=== Possible missing firmware ===

			Download the missing firmware file from here: https://web.git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/

			Then copy it into /lib/firmware and run
			sudo update-initramfs -u

	=== LVM ===		=== LVM ===

2024-11-20T11:13:55Z

Set up public key SSH authentication

← Older revision		Revision as of 11:13, 20 November 2024
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	If you can not use ssh-copy-id (such as if adding a key for user root which can not log in using password), then simply cat they key from .ssh/id_rsa.pub on your client to the .ssh/authorized_keys file on your server.		If you can not use ssh-copy-id (such as if adding a key for user root which can not log in using password), then simply cat they key from .ssh/id_rsa.pub on your client to the .ssh/authorized_keys file on your server.

			= Nice utils =
			parcellite is a nice clipboard manager to synchronize your clipboards!
			sudo apt install parcellite

			ksnip is a great screenshot util to easily take screenshots and add arrows, text boxes etc to the screen shot
			sudo apt install ksnip

2024-10-04T10:20:12Z

Graphics drivers

← Older revision		Revision as of 10:20, 4 October 2024
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	After doing the steps above, do:		After doing the steps above, do:
	sudo cp /home/stefan/.config/monitors.xml /var/lib/gdm3/.config		sudo cp /home/stefan/.config/monitors.xml /var/lib/gdm3/.config

			==== Install latest Nvidia drivers from Nvidia (instead of Debian) ====

			https://linuxcapable.com/install-nvidia-drivers-on-debian/

	=== Restart Gnome ===		=== Restart Gnome ===

2024-08-23T08:23:51Z

Linux performance

← Older revision		Revision as of 08:23, 23 August 2024
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	== Linux performance ==		== Linux performance ==
	[http://www.brendangregg.com/ http://www.brendangregg.com/]		[http://www.brendangregg.com/ http://www.brendangregg.com/]
			=== Measure elapsed time with precision in bash scripts ===
			date +%s.%N
			<cmd>
			date +%s.%N

	== Kernel ==		== Kernel ==

2024-08-06T12:43:51Z

Set up public key SSH authentication

← Older revision		Revision as of 12:43, 6 August 2024
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	Then send your key to the server for your account:		Then send your key to the server for your account:
	ssh-copy-id -i .ssh/id_rsa.pub 10.0.0.26		ssh-copy-id -i .ssh/id_rsa.pub 10.0.0.26

			If you can not use ssh-copy-id (such as if adding a key for user root which can not log in using password), then simply cat they key from .ssh/id_rsa.pub on your client to the .ssh/authorized_keys file on your server.

2024-08-06T12:21:40Z

Clean out journalctl logs

← Older revision		Revision as of 12:21, 6 August 2024
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	= Clean out journalctl logs =		= Clean out journalctl logs =
	journalctl --flush --rotate --vacuum-time=30d		journalctl --flush --rotate --vacuum-time=30d

			= Set up public key SSH authentication =
			On your client PC which you want to connect from, run:
			ssh-keygen
			Accept all the defaults. Use a passphrase if you want to (not for automated setups).

			Then send your key to the server for your account:
			ssh-copy-id -i .ssh/id_rsa.pub 10.0.0.26

2024-08-06T08:41:57Z

← Older revision		Revision as of 08:41, 6 August 2024
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	or		or
	sudo apt install linux-generic-hwe-22.04		sudo apt install linux-generic-hwe-22.04

			= Clean out journalctl logs =
			journalctl --flush --rotate --vacuum-time=30d