CMPSC 311 - Introduction to Systems Programming UNIX Essentials

Flashcards for CMPSC 311 - Introduction to Systems Programming, covering UNIX essentials and command-line interface concepts.

Unix Philosophy

Write programs that do one thing and do it well.

Modularity

Thinking in terms of components.

Transparency

Making inspection and debugging easier.

Command Line Interface

Efficient and powerful, scriptable, simple and reliable.

Shell Program

Interprets built-in commands, runs other programs, and runs shell scripts.

/ (root)

Root directory of the entire filesystem.

/usr

Installed software.

/home

Users' own files.

/tmp

Temporary files.

Root (Super User)

Can do anything.

su

Administrative privileges.

sudo (su 'do')

Temporary privileges (per command).

ls

Listing files.

mv

Moving/copying files.

rm

Deleting files.

cat

Reading files.

touch

Creating files.

pwd

Print working directory.

cd

Change directory.

mkdir

Creating directories.

rmdir

Removing directories.

.

The current directory.

..

The parent directory.

~

Home directory.

help

Built-in option to most commands for help.

man

Displays the manual page for a command.

Shell script

A list of commands to run.