Hey guys. I have a problem with grep and do not know how to solve it. Can anyone help?

1. Write a command that uses grep with regular expressions to look for lines containing only (meaning it's the only string on that line) the string 'win' followed by one and only one vowel in a file called 'text.dat'.

2. Write a command that uses grep with regular expressions to look for the string 'win' followed by zero or more numbers, followed by one or more letters at the end of a line in a file called 'text.dat'.

3. Write a command that uses grep with regular expressions to look for the string 'wind' immediately followed by either the string 'mill' or 'ow' or 'chill' at the beginning of a line in a file called 'text.dat'

Thank you! :)

This is the first one:

grep '^win[aeiou]$' text.dat

back in a bit...

This is the easiest way of doing the last one...

egrep '(^window|^windmill|^windchill)' text.dat

for the 2nd one...
if you have win followed by zero numnbers and then letters:
grep 'win[a-z]$' text.dat

and i'm trying to get the other bit to work with numbers