# Where in the directory tree am I?
pwd
# List the documents and sub-directories in the current directory
ls
# a bit nicer listing with more information
ls -laF
# Change into your home directory
cd ~
# Change back into the last directory
cd -
# Change one directory up in the tree
cd ..
# Change explicitly into a directory "temp"
cd temp
# Quickly show content of a file "temp.txt"
# exist the view with "q", navigate line up and down with "k" and "j"
less temp.text
# Show the beginning of a file "temp.txt"
head temp.txt
# Show the end of a file "temp.txt"
tail temp.txt