vim ~/.bash_profile
vim hello_world
./hello_world
ls -al
chmod 744 hello_world 
./hello_world
mv hello_world hello_world.sh
source ~/.bash_profile
vim ~/.bash_profile
source ~/.bash_profile
vim ~/.bash_profile
source ~/.bash_profile
clear
vim ~/.bash_profile
source ~/.bash_profile
vim ~/.bash_profile
source ~/.bash_profile
clear
cd ../..
cd lectures/6
alias ...="cd ../.."
pwd
...
pwd
alias ....="cd ../../.."
man alias
alias woman="man"
woman alias
alias
cd 
pwd
391
pwd
unalias ...
alias
cd ~
ls -al
vim ~/.bashrc
vim ~/.bash_profile
vim ~/.bashrc
source ~/.bashrc
source ~/.bash_profile
vim ~/.bash_profile
391
cd lectures/6
ls -al
vim beans.txt
chmod ug+w beans.txt
ls -al
chmod 000 beans.txt
ls -al
cat beans.txt
chmod 664 beans.txt 
ls -al
groups
ps 
ps aux
ps -u zorahf
ps -u brettwo
ps -u rea
java SlowProgram
screen 
screen -ls
screen -r 23247
logout
screen -ls
screen -r 23247