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SSH Keys

ssh-keygen -t rsa -C "" eval "$(ssh-agent -s)" ssh-add ~/.ssh/id_rsa 

Linux

Processes

ps aux #list all processes kill << pid>> #kills pid without sudo kill <<pid>> -9 #kills pid if previous doesnt' work top #shows the processes taking the max amount of resources 

Searching

grep -R "<<search-term>>" <<path here>> #Searches the entire folder recursively for the search term 

Terminal

sudo scutil --set HostName <<hname>>#updates hostname in terminal alias l=ls #Set l as ls 

PS1 things

export PS1='\u@\h: ' #hides path export PS1='> ' #super minimalistic only shows ">" 

VIM shortcuts

2w move two words forward 3b move two words backword $ move to eol 0 move to behining of line :set paste while copying indentation :set nopaste after copying indentation 2< two unindent 3> 3 indents o to create new line #ctrl+- or cmd+- works to zoom on windows/mac 

TMUX

" down % up n , p , x , c traverse 

PYTHON

Built in objects

type(objectname) #Built in  inspect.getmembers(object) #will return all class members of object

Markdown

** bold ** * italics * ~~ strikethrough~~ 1.one 2.two 1.three but one 4.oho -unordered here +and here too 
ok = 33 ok=ok+30

Quotes here , length = infinity

Git

git config --global user.name "anderson" git config --global user.email "" git config --global color.ui auto git config --global alias.ci commit ssh -T git@github.com git add * git rm git commit -m "" git push git branch branchname git checkout branchname git pull origin branchname After .gitignore file git rm -r --cached . git add . git ci -m "Removed all unecessary files" 

For new repos

git remote add origin git@github.com:andersonpaac/cheats-hax.git git push -u origin master 

Heroku

One time setup

heroku login heroku keys:add 

One time repo setup

heroku git:remote -a <APPNAME> 

Updating the repo

git push heroku master 

#Heroku db migrate

heroku run rake db:migrate 

RPi

DISABLE WIFI POWER MANAGEMENT

sudo nano /etc/modprobe.d/8192cu.conf options 8192cu rtw_power_mgnt=0 rtw_enusbss=0 arp -a -i bridge100	| grep -v "incomplete"	#Discovery on interface bridge100 

Restart WIFI config from /etc/wpa_supplicant/wpa_supplicant.conf

wpa_cli reconfigure wpa_cli status #status

Fast nmap

nmap -sS -O 192.168.0.1-255 #OS detection + port scan nmap -sn 192.168.1.100-140 

#List programs and ports being used

lsof -i -P | grep -i "listen" 

Postgres

Admin

sudo su - postgres #logs in postgres pg_ctl -D /usr/local/var/postgres -l /usr/local/var/postgres/server.log start

Create

CREATE DATABASE dbname; CREATE USER uname WITH PASSWORD 'thispass'; CREATE TABLE MASTER( ID PRIMARY KEY NOT NULL, SYM TEXT NOT NULL, VAL REAL); 

Insert

INSERT INTO TABNAME VALUES(0,'HELLO',234); 

General commands

\d # Gives description \q # Quits \d tablename #Gives tablename definition 

ALTER

Adding a column

Adding a column will require a default value , constraints can be given as well with the alter command

ALTER TABLE master ADD COLUMN exchange text NOT NULL DEFAULT 'NYSE'; 

Updating column/values for specific rows

UPDATE master SET exchange='NASDAQ' where id='AAPL'; 

About

Cheatsheets for Vim , github , tmux , regular linux stuff too!

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