# To show the last 10 lines of file
tail file

# To show the last N lines of file
tail -n N file

# To show the last lines of file starting with the Nth
tail -n +N file

# To show the last N bytes of file
tail -c N file

# To show the last 10 lines of file and to wait for file to grow
tail -f file

# To show the last 5 lines of file
tail -5 file