ls
ls -a
nano .bashrc
alias
attud
attu
man cp
ls
touch file2.txt
touch file1
cp file1 file2.txt 
cp -i file1 file2.txt 
alias cp="cp -i"
cp file1 file2.txt 
ls -a
nano .bashrc
ls -a
nano .plan
finger
finger josh
ls
ls -l file2.txt 
groups
chgrp admin file2.txt
ls -l file2.txt 
ls -l
chmod ugo+rwx file2.txt
ls -l
chmod ugo-rwx file2.txt
ls -l file2.txt
cat file2.txt
chmod u+rwx file2.txt
cat file2.txt
ls -l file2.txt
chown root file2.txt
cd CSE390/lecture4/
ls
ls secondLevel/
ls -l
chmod -R o-r *.txt
ls -l
ls -l secondLevel/
ls
chmod o+r *.txt
ls -l
find -name *.txt
find -name "*.txt"
find -name "*.txt" | xargs chmod o-r
ls -l
ls -l secondLevel/