ls
ls -a
emacs .bash_profile 
alias
emacs .bashrc
alias
ssh attu
alias
source ~/.bashrc
alias
emacs .bashrc
source ~/.bashrc
alias
finger rea
cd
emacs .plan
finger rea
pwd
cd 390
groups rea
grep orca /etc/group
chgrp orca crazy.txt
ls -lt
umask
umask 0044
touch lec04.txt
ls -l
umask 0022
touch old.txt
ls -l
chmod o+w temp3.txt 
ls -lt
chmod u-w temp1.txt 
ls -lt
chmod u+w temp1.txt 
ls -lt
cat temp2.txt 
chmod -x temp2.txt 
ls -lt
chmod u-r temp2.txt 
ls -lt
cat temp2.txt 
cat >> temp2.txt
cat temp2.txt 
chmod u+r temp2.txt 
cat temp2.txt 
ls -l
chmod ogu-rwx temp2.txt 
ls -l
cat temp2.txt 
cat > temp2.txt 
chmod u+rw
chmod u+rw temp2.txt 
ls -l
exit