Automate the menu options using shell script Post: 302900357

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Top Forums Shell Programming and Scripting Automate the menu options using shell script Post 302900357 by shivakumar6g on Tuesday 6th of May 2014 10:13:45 AM

05-06-2014

Registered User

Quote:

Originally Posted by rbatte1

If this is calling the supplied passwd command, then it will be difficult. The thing is that passwd will empty/ignore the input buffer you may supply and this is to stop people trying to subvert or bypass it.

There are some brute-force methods, but they increase the risk to compromising you accounts and losing access so you can't undo it.

My guess is that you want to automate setting your password across multiple servers which each have a simple menu system on them. Not a good plan. If you want to tie machines together in such a way, consider using one of:-

SSH keys
LDAP
NIS

Can you confirm what you really want to do/bypass?

Robin

Hi Robin,

Actually the code of the menu items and corresponding calls to each option already done by some developers
may task is to test the options are working correctly or not.
i am giving one more example for
when i enter 3, the system version will be displayed by running a command "sudo /opt/systeminfo/version.sh"
output displayed for the input:
System Information:
------------------------
Version:1.0.0.1
Build number:12

Now using the automated script for this option
1.start the menu
2.Enter the value 3
3.Validate whether the Version and build number are similar to what exit in version
4.Display the report
Now i can be able to do 1 and 2 steps but how to do the step3 and step4...

shivakumar6g

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LEARN ABOUT X11R4

chsh

CHSH(1)                                                            User Commands                                                           CHSH(1)

NAME

       chsh - change login shell

SYNOPSIS

       chsh [options] [LOGIN]

DESCRIPTION

       The chsh command changes the user login shell. This determines the name of the user's initial login command. A normal user may only change
       the login shell for her own account; the superuser may change the login shell for any account.

OPTIONS

       The options which apply to the chsh command are:

       -h, --help
           Display help message and exit.

       -R, --root CHROOT_DIR
           Apply changes in the CHROOT_DIR directory and use the configuration files from the CHROOT_DIR directory.

       -s, --shell SHELL
           The name of the user's new login shell. Setting this field to blank causes the system to select the default login shell.

       If the -s option is not selected, chsh operates in an interactive fashion, prompting the user with the current login shell. Enter the new
       value to change the shell, or leave the line blank to use the current one. The current shell is displayed between a pair of [ ] marks.

NOTE

       The only restriction placed on the login shell is that the command name must be listed in /etc/shells, unless the invoker is the superuser,
       and then any value may be added. An account with a restricted login shell may not change her login shell. For this reason, placing /bin/rsh
       in /etc/shells is discouraged since accidentally changing to a restricted shell would prevent the user from ever changing her login shell
       back to its original value.

FILES

       /etc/passwd
           User account information.

       /etc/shells
           List of valid login shells.

       /etc/login.defs
           Shadow password suite configuration.

SEE ALSO

       chfn(1), login.defs(5), passwd(5).

shadow-utils 4.5                                                    01/25/2018                                                             CHSH(1)