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Top Forums Shell Programming and Scripting How to give password at run time in a shell script? Post 302807529 by Little on Tuesday 14th of May 2013 11:13:04 PM
Old 05-15-2013
How to give password at run time in a shell script?

hi,

how can i pass a password automatically when a shell script is running.

i have shell script(runscript.sh) which call another shell script inside it as a different user.

runscript.sh contains

Code:
su - nemo -c "/bin/main_script.sh"

but when i execute "runscript.sh" it try to run main_script.sh and prompts for a password. so i have to give the password manually. is there a way so that the script automatically reads a password? or is there a way so it doesnot prompt for a password at all?
 

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dxchpwd(1X)															       dxchpwd(1X)

NAME
dxchpwd - Create or change password program SYNOPSIS
dxchpwd dxchpwd -r | -l dxchpwd [-r | -l] -q dxchpwd [-r | -l] -u username OPTIONS
If dxchpwd is invoked without any options, it is assumed that the current user's password is to be changed. The following options are also accepted: Tells dxchpwd that the password change is to be done for a Local user. This can be combined with the -u and -q options. Tells dxchpwd that the password change is to be done for a NIS user. This can only be done from a NIS master and can be combined with the -u and -q options. Tells dxchpwd to query the user for the user name of the account whose password is to be changed. Tells dxchpwd to change this user's password. DESCRIPTION
The dxchpwd command lets you change your password. When you invoke the dxchpwd command, the program prompts you for the old password and then for the new password. Next, the program asks you for the new password again, to verify that you have typed it correctly. Note that the passwords are not displayed on the screen. Your new password must meet the length requirements specified by the authorization database for the user whose password is being changed. If your system is running with enhanced security, you may have to choose a password from a list of randomly generated passwords or you may be prohibited from changing your password until its minimum lifetime has expired, as specified in the authorization database. EXAMPLES
The following example requests that the password be changed for user smith: dxchpwd -u smith FILES
Password file Protected Password Database dxchpwd executable SEE ALSO
X(1X), xdm(1X), passwd(1) dxchpwd(1X)
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