wget http://courses.cs.washington.edu/courses/cse391/20au/lectures/8/lecture8.zip
ls
unzip lecture8.zip 
whoami
id
users
pinky
groups
ps
users
ps -u hschafer
top
ls
users
whoami
pwd
ls -la
vim .bash_profile 
exit
vim .bash_profile 
cd /cse/web/courses/cse391/20au/
cd
alias 391="cd /cse/web/courses/cse391/20au"
391
pwd
ls
cd 
ls
alias 391="/cse/web/courses/cse391/20au"
cd 391
alias 391="cd /cse/web/courses/cse391/20au"
vim .bash_profile 
echo $PATH
whereis grep
asdf
ls
cd 8
ls
chmod +x run.sh 
ls
./run.sh 
cd
ls
cd 8
ls
ls -la
./simple.sh
chmod g-x run.sh
ls -la
chmod g+xw run.sh
ls -la
chmod g-xw run.sh
chmod g-rx, o+w run.sh
chmod g-rx,o+w run.sh
sudo
su
chmod 740 run.sh
ls -la
chmod ug+rwx,o+r,o-wx run.sh
ls -la
chmod 774 run.sh
cd
ls -la