marvin simkin simkin.asu

Marvin Simkinhttp://simkin.asu.edu

Get Ready to Race!• Teams of two (or three)

• One person works the computer

• Other person raise hand when done

Go To This Web Site

http://zotline.com

A program

• In English:– Calculate the area of a rectangle 5m by 10m– Store the result where I can use it later– Call it “LAWNSIZE” for future reference

• Computer language:– LAWNSIZE = 5 * 10

The Power of Unix

• Automation

• Use the keyboard not the mouse

• Commands in files

The Unix File System

Secure Shell

Secure Shell – Client

Secure Shell – Add Profile

Secure Shell – kaibab

Secure Shell – Edit Profile

Secure Shell – kaibab.la.asu.edu

Secure Shell – kaibab

Secure Shell – Warning

DANGER!

Secure Shell – Password

Secure Shell – Success!

TypeThis

/export/home4/msimkin/shared/setup

$ echo "Hello, world."

Hello, world.$

Type This:

$ /usr/bin/lslib$ /usr/bin/cat > ./hiecho "Hello, world." [control-D]$ /usr/bin/lshi lib$ /usr/bin/cat < ./hiecho "Hello, world."$ /usr/bin/chmod 755 ./hi$ ./hi

Type This:

VariablesA variable is a place to store some info

Variable namePWD

Value stored in this variable

/export/home4/msimkin/shared/msimkin

$ cat > ./heyecho "Hey, $1" echo "What’s up?" [control-D]$ cat < ./heyecho "Hey, $1" echo "What’s up?" $ chmod 755 ./hey$ ./hey bud

Type This:

X, Y, Z,A0.9961,14.671,12.409,20.3191,1.6958,24.077,80.1797,11.501,15.133,32.7960,14.565,6.2765,12.6589,15.011,6.1656,11.7052,12.376,7.1086,12.6402,4.9692,15.413,70.8833,10.468,7.9641,10.0428,0.9109,16.076,70.5855,10.315,11.851,20.1297,7.0747,5.1924,5

Example Data File

Rows

Columns

$ /usr/bin/passwdpasswd: Changing password for msimkinEnter existing login password: New Password: Re-enter new Password:

Change your password