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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
Old 05-06-2014
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...
 

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chfn(1) 						      General Commands Manual							   chfn(1)

NAME
chfn - change finger information SYNOPSIS
chfn [-D binddn] [-P path] [-f name] [-o office] [-p phone] [-h home_phone] [-m other] [-r service] [-q] [-u] [-v] [user] DESCRIPTION
chfn is used to change the user finger information. This are the users fullname, office room number, office phone number and home phone number. This information is stored in the /etc/passwd file and typically printed by finger(1) and similiar programs. A normal user may only change the fields for their own account, the super user may change the fields for any account. Also, only the super user may use the -o option to change the undefined portions of the GECOS field. If no information is given on the command line, chfn operates in an interactive fashion, prompting the user for each field. Enter the new value to change the field, or leave the line blank to use the current value. Enter none or a blank only to remove the current value. The current value is displayed between a pair of [ ] marks. The only restrictions placed on the contents of the fields is that no control characters may be present, nor any of comma, colon, or equal sign. The other field does not have this restriction, and is used to store accounting information used by other applications. This version of chfn is able to change the shell of local, NIS, NIS+ and LDAP accounts, if the permissions allow it. OPTIONS
-D, --binddn binddn Use the Distinguished Name binddn to bind to the LDAP directory. The user will be prompted for a password for simple authentica- tion. -P, --path path The passwd and shadow files are located below the specified directory path. chfn will use this files, not /etc/passwd and /etc/shadow. This is useful for example on NIS master servers, where you do not want to give all users in the NIS database auto- matic access to your NIS server and the NIS map is build from special files. -f, --full-name Specify your real name. -o, --office Specify your office room number. -p, --phone Specify your office phone number. -h, --home-phone Specify your home phone number. -m, --other Specify the undefined portions of the GECOS field. -r, --service Specify the service where the GECOS field should be changed. Supported services are files, ldap, nis and nisplus. -q, --quite Don't be verbose. -u, --usage Print a usage message and exit. --help Print a more verbose help text and exit. -v, --version Print version information and exit. ENVIRONMENT
SHADOW_CHFN - If this environment variable is set to 1, the chfn options are compatible to the version from the shadow suite. FILES
/etc/passwd - user account information SEE ALSO
chsh(1), finger(1), passwd(5) AUTHOR
Thorsten Kukuk <kukuk@suse.de> pwdutils February 2004 chfn(1)
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