ps bash ps exit echo rea echo -n rea echo "hello there" echo hello there echo hi there * echo "hi there *" echo "your current directory: `pwd`" NAME=Ruth $NAME echo $NAME echo $Name FILE="ls *.txt" set | grep FILE echo $FILE ls *.txt rm silly.txt echo $FILE FILE="`ls *.txt`" set | grep FILE echo $FILE touch silly.txt ls *.txt echo $FILE set | grep FILE FILE="hello $NAME" echo $FILE FILE='`ls *.txt`' echo $FILE x=5 y=6 echo "$x + $y" let z="$x + $y" echo z echo $z x=3 echo x echo $x echo "$x" echo '$x' echo \'$x\' echo 'x' echo $HOSTNAME echo $PS1 man bash echo $SHELL echo $USER echo $PATH ./slide7.sh PATH="" echo $PATH ./slide7.sh PATH="${PATH}:/homes/iws/rea/390" echo $PATH slide7.sh seq 6 chmod u+x createhw.sh ./createhw.sh 5