CP LAB MODEL

General Purpose Commands

 Aim

To study and execute Unix commands.

Command	Function
date	Used to display the current system date and time.
date  +%D	Displays date only
date  +%T	Displays time only
date  +%  Y	Displays the year part of date
date  +%  H	Displays the hour part of time
cal	Calendar of the current month
cal year	Displays calendar for all months of the specified year
cal month  year	Displays calendar for the specified month of the year
who	Login details of all users such as their IP, Terminal No, User name,
who  am  i	Used to display the login details of the user
tty	Used to display the terminal name
uname	Displays the Operating System
uname  -r	Shows version number of the OS (kernel).
uname  -n	Displays domain name of the server
echo  "txt"	Displays the given text on the screen
echo  $HOME	Displays the user's home directory
man cmdname	Manual for the given command. Press q to exit
exit	Exit from a process. If shell is the only process then logs out

[staff		staff]$	date
Sat  Apr	9  13:03:47  IST  2011

[staff   staff]$   date   +%D

04/09/11

[staff   staff]$   date   +%T

13:05:33

[staff   staff]$   date   +%Y

2011

[staff   staff]$   date   +%H

13

[staff						staff]$	cal
		April  2011
Su	Mo  Tu		We	Th	Fr	Sa
					1	2
3	4	5	6	7	8	9
10	11  12  13  14  15  16
17	18  19  20  21  22  23
24	25  26  27  28  29  30

  

  

[staff			staff]$		cal		1800
							1800
January						February								March
Su  Mo  Tu  We  Th  Fr  Sa				Su  Mo  Tu  We  Th  Fr  Sa							Su  Mo  Tu  We  Th  Fr  Sa
1	2	3	4							1							1
5    6    7    8	9  10  11			2	3	4	5	6	7	8	2	3	4	5	6	7	8
12  13  14  15  16  17  18				9  10  11  12  13  14  15							9  10  11  12  13  14  15
19  20  21  22  23  24  25				16  17  18  19  20  21  22							16  17  18  19  20  21  22
26  27  28  29  30  31				23  24  25  26  27  28							23  24  25  26  27  28  29
											30  31
…							…							…