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user5145 / 00 linux notes

Last active December 31, 2022 17:39

linux notes

	# pulseaudio latency
	watch -n 1 "pactl list sink-inputs \| grep Latency"


	# how to use ar
	mkdir openjdk
	for deb in jdk8-debs/*.deb ; do ar p ${deb} data.tar.xz \| unxz \| tar x -C openjdk; done


	# ghost script convert to pdf

user5145 / windows notes

Last active March 22, 2020 11:07

	# turn off hibenation
	powercfg -h off


	# turn on scripts
	Get-ExecutionPolicy -List
	Set-ExecutionPolicy -Scope CurrentUser Unrestricted
	Set-ExecutionPolicy Unrestricted

user5145 / gcc flags

Last active August 31, 2019 20:18

common cpu flags for gcc

	# instructions supported by everything from this century (bulldozer(Steamroller)+, Sandy Bridge+)
	# these good ones are not included -mxsavec -mxsaves -mavx2
	# these may slow down -ftree-vectorize -ftree-slp-vectorize
	FLAGS_TEMP="-mtune=generic -O2 -g -pipe -fstack-protector-strong -fno-plt -frecord-gcc-switches -D_FORTIFY_SOURCE=2 -msse -msse2 -mssse3 -msse3 -msse4.1 -msse4.2 -mfpmath=sse -msse2avx -mavx -maes -mbmi -mbmi2 -mxsave -mxsaveopt -msahf -mprfchw -mcx16"
	#
	# these instructions are for everything usable
	FLAGS_TEMP="-mtune=generic -O2 -g -pipe -fstack-protector-strong -fno-plt -frecord-gcc-switches -D_FORTIFY_SOURCE=2 -msse -msse2 -mssse3 -msse3 -msse4.1 -msse4.2 -mfpmath=sse -msse2avx -mavx -mavx2 -maes -mbmi -mbmi2 -mxsave -mxsavec -mxsaveopt -mxsaves -msahf -mprfchw -mcx16"
	#
	# the same but with some legacy flags
	FLAGS_TEMP="-mtune=generic -O2 -g -pipe -fstack-protector-strong -fno-plt -frecord-gcc-switches -D_FORTIFY_SOURCE=2 -msse -msse2 -mssse3 -msse3 -msse4.1 -msse4.2 -mfpmath=sse -msse2avx

user5145 / default.pa

Last active January 25, 2019 12:27

load echo cancellation module from user space

	#!/usr/bin/pulseaudio -nF

	# Save it as ~/.config/pulse/default.pa and configure aec_args to your needs

	# load system configuration
	.include /etc/pulse/default.pa

	# add user modules
	# for source_master run pacmd list-sources \| grep -Po '(?<=name: \<).*(?=\>)'
	# for sink_master run pacmd list-sinks \| grep -Po '(?<=name: \<).*(?=\>)'

user5145 / flatpak install

Last active November 20, 2024 13:59

how to build, install and remove flatpak applications from cli

	1. Store in a repository
	flatpak-builder --force-clean build-dir --repo=/path/to/local/repo your.application.Client.yml

	2. Install from the repository
	flatpak --user install localrepo your.application.Client

	3. Install the repository
	flatpak --user remote-add --no-gpg-verify local-repo /path/to/repo

	4. Store in a folder