cat
cat > important.txt
cat important.txt 
sftp attu.cs.washington.edu
scp
scp important.txt attu.cs.washington.edu:
sftp attu.cs.washington.edu
ls
tar
man tar
tar -xzvf cowsay-3.03.tar.gz 
ls
cd cowsay-3.03/
ls
cd ..
ls
diff file1.txt file2.txt 
diff file1.txt file1.txt 
man diff
diff -y file1.txt file1.txt 
diff -y file1.txt file2.txt 
ls *.txt
ls -R *.txt
ls -r *.txt
ls -R *.txt
touch hw2/foo.txt
touch cowsay-3.03/cow.txt
ls -R *.txt
ls -lR *.txt
man ls
ls -lR
find .
find . | more
find . -name *.txt
find . -name "*.txt"
# `find . -name "*.txt"`
ls -l
touch `find . -name "*.txt"`
ls -l
cat file*
grep "H[ie]" *.txt
grep "H[ie]*" *.txt
grep "H[ie]" *.txt
grep "H[foobar]" *.txt
grep CSE 14[23]  *.txt
grep CSE14[23]  *.txt
ls
./bmi.sh
chmod +x bmi.sh
./bmi.sh 
./bmi.sh 152 72
./bmi.sh 152 32
chmod +x createhw.sh 
seq 1 8
seq 8