Tech Tips

Sunday, June 14, 2020

Unable to rename in go projects in vscode

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vscode used to use gorename to do the renames. However, gorename does not support go modules. gopls should be used instead. If it is not ava...
12 comments:
Sunday, March 22, 2020

Run command on suspend

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Create a file located in /usr/lib/systemd/system-sleep directory: #!/bin/sh if [ " ${ 1 } " == "pre" ] ; then ...
2 comments:
Tuesday, March 3, 2020

Debug route table

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List all routes in system: route -n Get route for a specific IP: ip route get 1 .1.1.1
1 comment:

Log denied connections in firewalld

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Edit filr /etc/sysconfig/firewalld: FIREWALLD_ARGS = --debug = 10
2 comments:
Friday, February 14, 2020

Wait until able to connect

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while ! nc -w5 -z 10 .0.0.100 22 ; do echo "hello" ; done
1 comment:

Log executed command

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14 :27 $ ( set -x ; sleep 1 && sleep 2 ) + sleep 1 + sleep 2
1 comment:
Thursday, January 30, 2020

Check and modify connection mtu

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To check: [ root@lxd-node3 ~ ] # netstat -i Kernel Interface table Iface MTU RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-D...
Thursday, January 23, 2020

lxd: Fix version in snap

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snap refresh lxd --channel = 3 .18

fedora: Lockdown a kernel version

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Fedora typically keeps 3 latest kernel versions. However, what if you want to keep an old specific kernel version which is known to work wel...
Thursday, January 2, 2020

Dell Precision 5540 - Battery drains in sleep mode

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Run the following command to check the suspend mode: cat /sys/power/mem_sleep If the output looks like this: [ s2idle ] deep It means th...
Monday, December 23, 2019

Increase storage of a lxd container

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By default lxd stopped to assign root (disk) device to a container. To modify storage volume of a container add a device like this: lxc conf...

Log quireis in dnsmasq

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Add the following line to dnsmasq configuration file: log-queries
Friday, November 22, 2019

Lxd on Fedora 31

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Fedora 31 has started to use cgroups v2 by default. According to Common F31 bugs it doesn't play nice with Docker, lxd and others. To m...
1 comment:

How to regenerate grub configuration

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sudo grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg
Friday, October 4, 2019

wifi utils

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List used wifi frequences sudo iwlist wlp1s0 scan | grep Frequency | sort | uniq -c | sort -n List available channels iwlist channel ...
2 comments:
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