echo "Single Quote"
echo 'foo
bar'
echo 'foo
bar'
echo 'foo\
bar'

echo "Double Quote"
echo "foo
bar"
echo "foo
bar"
echo "foo\
bar" 

echo "Backslash Single Quote"
echo `echo 'foo
bar'`   
echo `echo 'foo  
bar'`   
echo `echo 'foo\
bar'`  

echo "Backslash Double Quote"
echo `echo "foo
bar"`
echo `echo "foo
bar"`
echo `echo "foo\
bar"`

echo "Double Quote Backslash Single Quote"
echo "`echo 'foo
bar'`"
echo "`echo 'foo
bar'`"
echo "`echo 'foo\
bar'`"

echo "Dollar Paren Single Quote"
echo $(echo 'foo
bar')
echo $(echo 'foo
bar')
echo $(echo 'foo\
bar')

echo "Dollar Paren Double Quote"
echo $(echo "foo
bar")
echo $(echo "foo
bar")
echo $(echo "foo\
bar")

echo "Double Quote Dollar Paren Single Quote"
echo "$(echo 'foo
bar')"
echo "$(echo 'foo
bar')"
echo "$(echo 'foo\
bar')"