Windows Powershell Common Folder/File Operation

Create folder
mkdir c:\f1\f2\f3
md c:\f1\f2\f3
New-Item c:\f1\f2\f3 -ItemType directory

rm -r c:\f1\f2\f3

Create a file
New-Item c:\f1\f2\f3 -ItemType file -force -value "hello world"

cat c:\f1\f2\f3