FEW helpful commands in linux

How do you create a file in UNIX

cat > filename
this will create a file adn allows you to enter text and
to come out of the file,press ctrl+d.Then teh file will be
created.

touch command can also be used to create file.but this will
create empty file.

using Vi editor also the files can be created.

and few more editor like "ed" can also be used.
hence there are many ways to create a file in unix.