Notepad:Linux - Revision history

Lax: /* LVM */ expand the qemu disk

2023-07-20T02:42:35Z

LVM: expand the qemu disk

← Older revision		Revision as of 02:42, 20 July 2023
Line 116:		Line 116:
	== LVM ==		== LVM ==
	=== LVM Expand ===		=== LVM Expand ===
			Shutdown the volume and use qemu to expand
			qemu-img resize <disk.qcow2> <+XXG>
			restart
	Expand the physical size		Expand the physical size
	gparted		gparted

2023-07-17T20:42:15Z

Linux Tips and Tricks: bash TRAP command

← Older revision		Revision as of 20:42, 17 July 2023
Line 80:		Line 80:
	* Get Ethernet Address of network (Exclude lo, virtual and ethernet)		* Get Ethernet Address of network (Exclude lo, virtual and ethernet)
	ip -br l \| awk '$1 !~ "lo\|vir\|eth" { print $3 }'		ip -br l \| awk '$1 !~ "lo\|vir\|eth" { print $3 }'
			* [https://www.linuxjournal.com/content/bash-trap-command bash TRAP command]
			tempfile=/tmp/tmpdata
			trap "rm -f $tempfile" EXIT

	== IoT ==		== IoT ==

2023-07-06T02:14:03Z

IoT: sed to change dtoverlay

← Older revision		Revision as of 02:14, 6 July 2023
Line 107:		Line 107:
	dtoverlay=vc4-fkms-v3d		dtoverlay=vc4-fkms-v3d
	# dtoverlay=dwc2		# dtoverlay=dwc2

			or
			sed -i "/dtoverlay=dwc2/s/.*/dtoverlay=vc4-fkms-v3d/" /boot/firmware/config.txt

	== LVM ==		== LVM ==

2023-06-28T00:37:03Z

Linux Tips and Tricks: Rpi4 work ubuntu-frame dtoverlay

← Older revision		Revision as of 00:37, 28 June 2023
Line 102:		Line 102:
	(eliminate console=tty1)		(eliminate console=tty1)
	rd.plymouth=0 plymouth.enable=0 --log-level=0 systemd.log_level=0 systemd.show_status=0		rd.plymouth=0 plymouth.enable=0 --log-level=0 systemd.log_level=0 systemd.show_status=0

			* RPi4 use ubuntu-frame from [https://github.com/MirServer/ubuntu-frame/issues/39]
			/boot/firmware/config.txt
			dtoverlay=vc4-fkms-v3d
			# dtoverlay=dwc2

	== LVM ==		== LVM ==

2023-06-21T17:10:45Z

IoT: raspberry pi4 boot

← Older revision		Revision as of 17:10, 21 June 2023
Line 90:		Line 90:
	* Create a user password hash to automatically add		* Create a user password hash to automatically add
	mkpasswd -m sha-512 PASSWORD [SALT]		mkpasswd -m sha-512 PASSWORD [SALT]
	* [https://www.simplylinuxfaq.com/2020/03/how-to-completely-disable-boot-or-startup-messages.html ~~supress~~ message at boot]		* [https://www.simplylinuxfaq.com/2020/03/how-to-completely-disable-boot-or-startup-messages.html x86 Suppress message at boot]
	/etc/default/grub		/etc/default/grub
	GRUB_TIMEOUT_STYLE=hidden		GRUB_TIMEOUT_STYLE=hidden
Line 98:		Line 98:

	grub2-mkconfig -o /boot/grub2/grub.cfg		grub2-mkconfig -o /boot/grub2/grub.cfg
			* Raspberry Pi4 ubuntu suppress log at boot
			/boot/firmware/cmdline.txt
			(eliminate console=tty1)
			rd.plymouth=0 plymouth.enable=0 --log-level=0 systemd.log_level=0 systemd.show_status=0

	== LVM ==		== LVM ==

2023-06-21T02:37:35Z

IoT: Supress messages at boot

← Older revision		Revision as of 02:37, 21 June 2023
Line 90:		Line 90:
	* Create a user password hash to automatically add		* Create a user password hash to automatically add
	mkpasswd -m sha-512 PASSWORD [SALT]		mkpasswd -m sha-512 PASSWORD [SALT]
			* [https://www.simplylinuxfaq.com/2020/03/how-to-completely-disable-boot-or-startup-messages.html supress message at boot]
			/etc/default/grub
			GRUB_TIMEOUT_STYLE=hidden
			GRUB_HIDDEN_TIMEOUT_QUIET=true

			GRUB_CMDLINE_LINUX_DEFAULT="rhgb quiet rd.plymouth=0 plymouth.enable=0 --log-level=0 systemd.log_level=0 systemd.show_status=0"

			grub2-mkconfig -o /boot/grub2/grub.cfg

	== LVM ==		== LVM ==

2023-06-19T23:58:00Z

IoT: mkpasswd

← Older revision		Revision as of 23:58, 19 June 2023
Line 88:		Line 88:
	Change the restart command in ```/etc/needrestart/needrestart.conf``` to 'i'		Change the restart command in ```/etc/needrestart/needrestart.conf``` to 'i'
	sed "/#\$nrconf{restart} = 'i';/s/.*/\$nrconf{restart} = 'a';/" /etc/needrestart/needrestart.conf		sed "/#\$nrconf{restart} = 'i';/s/.*/\$nrconf{restart} = 'a';/" /etc/needrestart/needrestart.conf
			* Create a user password hash to automatically add
			mkpasswd -m sha-512 PASSWORD [SALT]

	== LVM ==		== LVM ==

2023-06-14T00:45:28Z

IoT: No daemon popup

← Older revision		Revision as of 00:45, 14 June 2023
Line 85:		Line 85:
	* [https://raspberrypi.stackexchange.com/questions/139093/change-netplan-wifi-encrypted-password Generate Encoded Password for Netplan / network-config - use psk]		* [https://raspberrypi.stackexchange.com/questions/139093/change-netplan-wifi-encrypted-password Generate Encoded Password for Netplan / network-config - use psk]
	wpa_passphrase <ssid> [passphrase]		wpa_passphrase <ssid> [passphrase]
			* [https://stackoverflow.com/questions/73397110/how-to-stop-ubuntu-pop-up-daemons-using-outdated-libraries-when-using-apt-to-i Ubuntu stop pop-up for daemons for apt]
			Change the restart command in ```/etc/needrestart/needrestart.conf``` to 'i'
			sed "/#\$nrconf{restart} = 'i';/s/.*/\$nrconf{restart} = 'a';/" /etc/needrestart/needrestart.conf

	== LVM ==		== LVM ==

2023-06-14T00:41:48Z

Generate encoded password for netplan

← Older revision		Revision as of 00:41, 14 June 2023
Line 80:		Line 80:
	* Get Ethernet Address of network (Exclude lo, virtual and ethernet)		* Get Ethernet Address of network (Exclude lo, virtual and ethernet)
	ip -br l \| awk '$1 !~ "lo\|vir\|eth" { print $3 }'		ip -br l \| awk '$1 !~ "lo\|vir\|eth" { print $3 }'

			== IoT ==

			* [https://raspberrypi.stackexchange.com/questions/139093/change-netplan-wifi-encrypted-password Generate Encoded Password for Netplan / network-config - use psk]
			wpa_passphrase <ssid> [passphrase]


	== LVM ==		== LVM ==

2023-06-02T17:25:25Z

Linux Tips and Tricks

← Older revision		Revision as of 17:25, 2 June 2023
Line 68:		Line 68:
	* Yum install with missing deps		* Yum install with missing deps
	rpm -Uvh --nodeps $(repoquery --location <module>)		rpm -Uvh --nodeps $(repoquery --location <module>)
	* [[Notepad:LVM Snapshot\| LVM Snapshot]]
	* [https://www.linuxquestions.org/questions/slackware-14/how-to-configure-iptables-for-router-with-2-public-ip-addresses-4175618196/ Example routing iptables firewall]		* [https://www.linuxquestions.org/questions/slackware-14/how-to-configure-iptables-for-router-with-2-public-ip-addresses-4175618196/ Example routing iptables firewall]
	* [[Notepad:Disable IPv6 \| Disable IPv6]]		* [[Notepad:Disable IPv6 \| Disable IPv6]]
Line 81:		Line 81:
	ip -br l \| awk '$1 !~ "lo\|vir\|eth" { print $3 }'		ip -br l \| awk '$1 !~ "lo\|vir\|eth" { print $3 }'

	== LVM Expand ==		== LVM ==
			=== LVM Expand ===
	Expand the physical size		Expand the physical size
	gparted		gparted
Line 88:		Line 89:
	Resize the file system		Resize the file system
	resize2fs /dev/vg.../lv...		resize2fs /dev/vg.../lv...
			=== [[Notepad:LVM Snapshot\| LVM Snapshot]] ===

	{{notepad}}		{{notepad}}