Computer Science Fundamental Unix

python foo.py

Compile foo.py into Bytecode and execute the result

cp -p foo footer

copy file foo to footer; file foo unchanged

ls -t1

list the files in reverse chronological order, with times

mkdir foo

make a directory named foo

cd foo

navigate down to subdirectory foo (foo can be anything)

cd

navigate to your home directory (cd means change directory)

cat foo

show the contents of the file foo on the screen

pwd

show were you are; your "path to working directory"

python foo.py < foo2

use Python program in foo.py with the input data that is in the file named foo

python

use python completely interactively; when you're ready to terminate the interactive session, input exit( ) {notice the required pair of parenthesis}