basicsys@mars~>echo abc
abc
basicsys@mars~>echo -e "\001"

basicsys@mars~>echo -e "\002"

basicsys@mars~>echo -n abc

abcbasicsys@mars~>echo -e -n "\001"

basicsys@mars~>echo "\a"
\a

basicsys@mars~>echo -e "\a"

basicsys@mars~>echo -E "\a"
\a
basicsys@mars~>echo  "\a"
\a
basicsys@mars~>echo -e "\a"

basicsys@mars~>echo -e "\a\001\002\003\004"

basicsys@mars~>echo "abc\ndef"
abc\ndef

basicsys@mars~>echo -e "abc\ndef"
abc
def

basicsys@mars~>echo -E "abc\ndef"
abc\ndef

basicsys@mars~>echo -e -n "abc\ndef"
abc

defbasicsys@mars~>echo -e "\005"

basicsys@mars~>echo -e "\006"

basicsys@mars~>echo -e "\007"

basicsys@mars~>echo -e "\008"
8
basicsys@mars~>echo -e "\018"
8
basicsys@mars~>echo -e "\18"
\18

basicsys@mars~>echo -e "\01"

basicsys@mars~>echo -e "\x1F"

basicsys@mars~>cat F1
abc
def
123

basicsys@mars~>cat -n F1
     1  abc
     2  def
     3  123

basicsys@mars~>cat F1
abc




def








123

basicsys@mars~>cat -s F1
abc

def

123

basicsys@mars~>date
Sun Nov  6 16:06:15 IST 2011

basicsys@mars~/lec1>cat P1
#!/bin/bash
echo abc
date
cat -n F1
echo bye
date

basicsys@mars~/lec1>cat F1
Hi
Hello
123

basicsys@mars~/lec1>P1
-bash: ./P1: Permission denied

basicsys@mars~/lec1>chmod u+x P1

basicsys@mars~/lec1>P1
abc
Sun Nov  6 16:16:17 IST 2011
     1  Hi
     2  Hello
     3  123
bye
Sun Nov  6 16:16:17 IST 2011

pico .bashrc

add the following 3 lines at the end of the file

PS1="\u@\h\w>"
set -C
PATH=$PATH:.

after that run the following command
. .bashrc

From now on don't need to do it again. 

you need to register to the course just once
to do it:

shalidan@mars~>~basicsys/register
Hello you called the basic systems registeration program
You need to call it in order to be able to submit exercises
You need to call this program just once.

Please enter your id number (9 digits): 123456789


To submit execise 1 you need to have the files
in your directory. For example P1.1 P1.2 P1.3 P1.4
to see them run the command
ls P1*

then type:

~basicsys/submit

shalidan@mars~>~basicsys/submit
Hello you  have called the submit program
Enter the exercise number: ex1
You can not submit exercise ex1 Bye.
shalidan@mars~>~basicsys/submit
Hello you  have called the submit program
Enter the exercise number: 1
Hello you  have called the submit ex1 program.
Note that you can submit files only once.
Do you want to continue (y/n)? y
Enter the login name of your partner (if you do not have a
then enter your login name): shalidan
Enter the login name of your partner (if you do not have a
OK to continue (y/n)? y
The files that you have to submit are :
   P1.1 P1.2 P1.3 P1.4
Your file list is: P1.1 P1.2 P1.3 P1.4
Recall that you can submit exercises just once!!!
OK to submit your files (y/n)?

shalidan@mars~>ls
P1  P1.1  P1.2  P1.3  P1.4

shalidan@mars~>ls P1
P1

shalidan@mars~>ls -l P1
-rwx---rwx 1 shalidan shalidan 39 Nov  6 16:44 P1

shalidan@mars~>ls P2
ls: P2: No such file or directory

shalidan@mars~>ls -l P1
-rwx---rwx 1 shalidan shalidan 39 Nov  6 16:44 P1

shalidan@mars~>ls P2
ls: P2: No such file or directory

shalidan@mars~>ls -a
.   .bash_logout   .bashrc  .kde      P1    P1.2  P1.4
..  .bash_profile  .emacs   .mozilla  P1.1  P1.3  .zshrc