For each of the following commands write a description of what it does and provide a screenshot of how it looks like:
df- it will tell you how much disk memory is available.
cal – it will display the current month and year calendar.
free – it will tell you how much memory is available.
cd – used to change directory.
pwd – list the current working directory.
ls – list the files and sub-directories in the current working directory.
file – determines file type
less – allows backward movement in the file.