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Full Discussion: Please write this script for me
Top Forums Shell Programming and Scripting Please write this script for me Post 302183334 by nadman123 on Tuesday 8th of April 2008 09:54:04 PM
Old 04-08-2008
Please write this script for me
UNIX shell script (Bourne shell syntax) called
admin_script. This script is described below as a usage summary:
admin_script [ -l n ] [ -f n ] [ -s username ] [ -d username ]
[ -b username yyyymm ] [ -c ]
Note: if no options are specified, a menu is displayed which allows
users to perform one of the following tasks and then exit. If
incorrect options are provided, an error message is echoed to standard
output followed by the usage line above and an appropriate exit value
should be returned to the shell. Any combination of the options can be
provided by the user and the options do not have to be provided in the
order given in the usage message.
-l n
Display the last n lines of the /etc/passwd file
-f n
Display the first n lines of the /etc/passwd file
-s username
Display the full path name of the login shell used by username
-d username
For the home directory of username, display an English language string
which shows the permissions of the user's home directory.
For example, suppose the home directory of cwilson has the following
permission string:
drwxr-xr-- ... /home/cwilson
In this case the output from the script would be:
User cwilson's home directory has the following permissions set:
Read,Write and Execute for the user.
Read and Execute for the group.
Read only for others.
-b username yyyymm
Perform a backup of the files in home directory of username. However,
when using this option we only want to backup files which have been
modified during the month specified in the option. The month is
specified as a four digit year followed by a two digit month (e.g.
200804 refers to April 2008). The files should be backed up to a
directory called .backup in the home directory of username. If this
directory does not exist when the script is run, it must be created by
the script.
-c
Return a count of all users registered on the system (not just those
users logged on) whose UID is greater than 500
-h
Send information to standard output regarding the author (including
student-id number) of the program and the date it was written
 

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LEARN ABOUT ULTRIX

su

su(1)							      General Commands Manual							     su(1)

Name
       su - substitute a user ID

Syntax
       su [username]

       su - [username]

       su -f [username]

Description
       The  command  requests the password of the specified username.  If the correct password is given, changes to that username without changing
       the current directory.  The user environment is unchanged except for HOME and SHELL which are taken from the password file entry for  user-
       name.   The  shell  that  is  run  is also taken from the password file entry for username.  The new user ID stays in force until the shell
       exits.

       If no username is specified, `root' is assumed.	To remind the superuser of his responsibilities, the shell substitutes `#' for	its  usual
       prompt.

Options
       -f   Prevents from executing the .cshrc file, making start up faster.

       -    Simulates a full login.

Diagnostics
       Sorry
	    An invalid password was supplied for the specified username.

       Unknown login: username
	    The specified username was not found in the passwd database.

       No directory
	    The home directory for the username is not accessible at this time (only with ``-'' argument).

       No shell
	    The shell specified in the passwd database entry for username could not be executed.

       Kerberos initialization failure
	    Consult your system administrator.

       If enhanced security features are enabled the following error messages are also possible:

       Requires secure terminal
	    Attempt to su to UID 0 on a line that is not marked secure in

       User's password has expired
	    Access is denied because the password for username is expired.

       This account is disabled
	    Access is denied because the auth entry corresponding to username is marked disabled.

Files
       Log file of anyone who became
			root, with a date mark.

See Also
       csh(1), sh(1), passwd(5yp), environ(7), edauth(8)
       Security Guide for Administrators
       Security Guide for Users

																	     su(1)
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