1. CS 202 Computer Science II Lab Fall 2009 August 27

2. Reza – Office SEM 255A – E-mail amayeh@cse.unr.eduamayeh@cse.unr.edu – Web-site http://www.cse.unr.edu/~amayeh/http://www.cse.unr.edu/~amayeh/ – Office hours: TBA

3. Today Topic Course Objectives Requirements Basic Unix/Linux

4. Course Objectives Familiar with Unix/Linux Environments Be able to work under Unix/Linux Environments Learn more about Tips/Tricks of C++ Language Learn how to debug programs Learn how to make programs reusable

5. Requirements Attendance Exercises Programming Assignments Reports Late turn in, subject to the policy provided by the professor Note : all students must have ecc account.

6. Lab Assignments All coding standards in the class website have to be followed. Two copies of assignments are required – A printed version based on the “Report Template” – A soft copy including : report, code, and executable on a CD or Jump Drive – Put two copies in one plastic folder

7. Why Linux? Can be used as: – Web servers – Scientific workstations Gives you: – More speed – More power – More control Advantages: – It is free – Flexible for different hardware platforms – Fewer crashes – Better security

8. Basic Unix/Linux Commands command [options] [arguments] ls [options] [directory or file] – allows users to see a list of file or directory in the specific location given by the users – $ ls /usr mkdir [options] directory – allows users to create directory – $ mkdir cs202 rmdir [options] directory –remove a directory rm [options] file – remove (delete) a file or directory (-r recursively deletes the directory and its contents) (-i prompts before removing files) – $ rm –R cs202 ! WITH rm COMMAND, CAN’T UNDO emacs/xemacs – are text editors used to create/modify files – $ emacs cs202file.cpp

9. Basic Unix/Linux Commands man – allows users to look up for the information of applications including description, usages, etc. – $ man ls cd [directory] – changes working directory to another or accesses to interesting directory, / or.. or../.. or../mydir/test/ or /mydir/test/ – $ cd cs202 cp [options] file1 file2 –copyfile1 intofile2; file2 shouldn't already exist. This command creates or overwritesfile2 – $ cp cs202file.sh homework.sh mv – moves file/directory to another location or another name – $ mv cs202 ~/tmp

10. Basic Unix/Linux Commands lpr (lp) [options] file –print to defined printer cat [options] file –concatenate (list) a file pwd – print working (current) directory passwd – to change the password exit – leave the shell logout – leave the system ^D –indicates end of data stream ^C –interrupt

11. Questions?