1. Lab 00 Discussion Linux Basics
CSCE 212 Computer Architecture
Lab 00 Discussion Linux Basics
Topics
Login in SWGN 1D39, a Linux Lab (3D22 is another)
Code-all.tgz (all the code from the book)
Basic Unix Commands
January 16, 2018

2. Overview Last Time New – Next Time:
Lec00 – C primer slides (we did not go over these in class)
New –
Login
Filesystem “tree”
Basic Commands
Saving attachment from “code-all.tgz”
Unpacking
Compiling showbytes
Running
Next Time:

3. Login to Unix/Linux Boxes in 1D39
Your Login name is the root_name of your USC address
Your password is your password
To logout you … (I’ll check on this. On my Linux box it is done differently and I’ll have to go down to 1D39 to remember how you do it there.

4. Unix file system /
At every point in Unix you are “in” the current working directory
At login your “current directory” initially will be your home-dir
You specify files and directories with paths
A full path (starts with slash) /acct/matthews/212
A relative path does not start with ‘/’ and starts from the current directory
acct
bin
dev
etc …
proc
matthews cp … ls
device drivers
212

5. Basic Commands ls – list the contents of this directory
cd – change directory
pwd – print working (current) directory
mkdir – make a directory
cp – copy file
mv – move a file (= rename)
rm – remove a file
pico (maybe nano) – a simple editor
gcc (Gnu C Compiler) –
man cmd – print the manual page on cmd

6. 30 Useful Unix Commands From Univ. of Manchester 1997

7. More Unix references
50 Most Frequently Used UNIX / Linux Commands (With Examples)
2010 Ramesh Natarajan
More experienced selection of commands
100 Useful Unix Commands & Unix Intro.
2014 by Oliver

8. Saving and unpacking code-all.tgz
mkdir 212
Student webmail
Save attachment
cd // go home
cd Downloads
cp code-all.tgz ~/212
cd ~/212 ls
tar xvfz code-all.tgz

9. Compiling showbytes Cd code Cd data
gcc show_bytes.c // this produces a.out
./a.out // run the executable
gcc show_bytes.c –o prog // names the executable prog
./prog // run the executable
Note show_bytes.c might be show-bytes.c