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Showing posts from February, 2019

rotate windows

ctrl+alt+arrow keys

screenshot windows

PrtScn (Print Screen) or CTRL + PrtScn Windows + PrtScn Alt + PrtScn Windows + Shift + S  Windows + Alt + PrtScn

gnome polkit gui auth agent for i3

sudo apt install policykit-1-gnome
-----------------
on .config/i3/confg add
exec_always /usr/lib/policykit-1-gnome/polkit-gnome-authentication-agent-1

i3 brightness script

cd
mkdir scripts
touch scripts/bright

nano/leafpad/gedit  bright
---------------------------------------------------------
#!/usr/bin/env bash
set -e
if [ "$#" -eq 0 ]; then
cat <<-eof p="">Usage: $0 [command]
Increase or decrease screen brightness at hardware level by steps of 10% of
max, as determined by the values under /sys/class/backlight/**. Limit values
to the range of 0 to max_brightness.

up | Increase brightness by 10%
down | Decrease brightness by 10%
current | Report current brightness


This script needs root access - sudo is an option, but you may also consider
allowing your user to run the script without a password prompt e.g.:
EOF
exit 1
fi
# Gather information
backlight_dir='/sys/class/backlight'
device_dir=$(ls "${backlight_dir}" | head -n 1)
if [ -z "$device_dir" ]; then
echo 'No backlight hardware is listed in /sys/class/backlight! Quitting.'
exit 1
fi
device_dir="${backlight_dir}/${device_dir}&quo…

get window class for i3

#!/bin/sh# Source: https://faq.i3wm.org/question/2172/how-do-i-find-the-criteria-for-use-with-i3-config-commands-like-for_window-eg-to-force-splashscreens-and-dialogs-to-show-in-floating-mode.1.html# i3-get-window-criteria - Get criteria for use with i3 config commands# To use, run this script, then click on a window.# Output is in the format: [== ...]# Known problem: when WM_NAME is used as fallback for the 'title=""' criterion,# quotes in "" are not escaped properly. This is a problem with the output of `xprop`,# reported upstream: https://bugs.freedesktop.org/show_bug.cgi?id=66807

xterm new config

! special
*.foreground:   #e4e4e4
*.background:   #262626
*.cursorColor:  #e4e4e4

! black
*.color0:       #fafafa
*.color8:       #868686

! red
*.color1:       #3e3a94
*.color9:       #3e3a94

! green
*.color2:       #534dc0
*.color10:      #534dc0

! yellow
*.color3:       #8081ff
*.color11:      #8081ff

! blue
*.color4:       #80b1ff
*.color12:      #80b1ff

! magenta
*.color5:       #a246d1
*.color13:      #a246d1

! cyan
*.color6:       #bc7190
*.color14:      #bc7190

! white
*.color7:       #000000
*.color15:      #000000
XTerm.vt100.metaSendsEscape: true
XTerm.vt100.saveLines: 4096
XTerm.vt100.scrollBar: true
XTerm.vt100.scrollbar.width: 4
XTerm.vt100.faceName: DejaVu Sans Mono:size=10:antialias=false
XTerm.vt100.font: 7x13
XTerm*selectToClipboard: true
XTerm.vt100.translations: #override \n\
    Ctrl M: maximize() \n\
    Ctrl R: restore()  \n\
    Ctrl Shift C: copy-selection(CLIPBOARD) \n\
    Ctrl Shift V: insert-selection(CLIPBOARD)

------------------------------------------------…

mysql mariadb

sudo pacman -S mariadb
sudo mysql_install_db --user=mysql --basedir=/usr --datadir=/var/lib/mysql
#optional#sudo systemctl enable mariadb.service
sudo systemctl start mariadb.service
mysql_secure_installation

mysql -u root -p

CREATE USER 'username'@'localhost' IDENTIFIED BY 'some_pass';
GRANT ALL PRIVILEGES ON mydb.* TO 'username'@'localhost';
FLUSH PRIVILEGES;


create database moo;
show databases;
use moo;
show tables;
create table animals( num int(2), name varchar(10), location varchar(10), primary key(num));
describe animals;
insert into animals ( num , name,location) values(1,'tiger','mountains');
select * from animals;
drop table animals;





linux cmd

ctrl+a = begining of terminal line
ctrl+e = end of line
ctrl+r= reverse search
ctrl+c= cancel

ss=  socket statistics alt to  depreciated netstat

ps channels STDIN,STDOUT,STDERR (0,1,2)

pipes

echo "something" > file #overwrites
echo "something" >> file # appends text

vscode i3wm

sudo pacman -S gconf code

proc limit

[[email protected] ~]$ ps --no-headers -Leo user | sort | uniq -c

/etc/security/limits.conf


* soft nproc 400 * hard nproc 200