03-24-2014
UNIX script coding help?
Unix script coding help?
i am trying to write a code that will display following menu to user:
(A) Add
(B) Subtract
(C) Multiply
(D) Divide
(E) Modulus
(F) Exponentiation
(G) Exit
Then ask user for choice (A-F). After taking users choice ask user for two numbers and
perform chosen operation on those two numbers. The program should keep asking
for choice / numbers unless user chooses ‘G' for exit.
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shexp(1) General Commands Manual shexp(1)
Name
shexp - display password expiration information for a user
Syntax
shexp [-q] [username]
Description
The command is used to display a user's password expiration information. The specified username, or logname if no username is supplied, is
converted to a UID by searching through the passwd file. The UID is then used to look up the user's entry in the Auth Data Base. The
password expiration information is then printed out in format.
% shexp
Expires Tue Dec 6 10:49:18 EST 1988
If the password has already expired the word Expires will be replaced with the word Expired. If password expiration is disabled for the
particular user in question the output of will be Never expires.
Options
-q Instead of displaying the expiration date and time in format, outputs it as three decimal numbers: the minimum password lifetime, the
maximum password lifetime, and the password modification time. All three numbers are displayed as they are found in the database.
Restrictions
Only the super-user may obtain information about users with UIDs other than the real UID of the invoking process.
Diagnostics
User not found in passwd data base.
There is no entry in for the specified username.
Cannot stat auth file.
The database is missing (security features may not be enabled).
Insufficient privilege.
An insufficiently privileged user is asking for information about a username with a UID different then their current real-UID.
An exit value of 0 indicates a successful operation, any other exit status indicates an error.
Files
See Also
passwd(1), getauthuid(3), auth(5)
Security Guide for Users
shexp(1)