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Top Forums Shell Programming and Scripting Script to change UNIX password Post 20137 by kornshellmaven on Monday 22nd of April 2002 11:23:20 AM
Old 04-22-2002
Question Script to change UNIX password

My shop has just ordained that all UNIX passwords expire after 45 days. We do NOT have a "single logon" facility, so I will need to logon to each of the servers (15+) I interact with and change my password by hand. I thought I could invoke passwd inside a ksh script as a Here document and effectively change my password, stage this script on all the servers under my id, and then invoke via REXEC from one server.

Unfortunately, when I run passwd as a Here doc, it doesn't take my old/new password from stdin.

Here's what I'm doing inside pass.sh:

#!/usr/bin/ksh
passwd <<EOF
oldpassword
newpassword
newpassword
EOF

Does anyone have any thoughts on how I can "synchronize" all my passwords? (I don't have root privs - I'm a developer, not an administrator).
 

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yppasswd(1)						      General Commands Manual						       yppasswd(1)

NAME
yppasswd - change password in Network Information Service (NIS) SYNOPSIS
yppasswd [name] DESCRIPTION
Note If Enhanced Security is enabled on your system, use the passwd command to change your password, even if NIS is in use. The yppasswd command lets you change your password in the Network Information Service (NIS) map, a network data base service. Only you or the superuser can change your NIS password. When you enter the yppasswd command, the program prompts you for the old password and then for the new password. Note that the passwords are not displayed on the screen. Next, the program asks you for the new password again, to verify that you have typed it correctly. If you do not type the passwords cor- rectly, you will receive an error message after you enter the new password. Your new NIS password must meet one of the following requirements: It must be a combination of at least six alphanumeric characters, or It must be a minimum of four characters, with at least one being non-alphanumeric, such as a control sequence. Note The passwd command does not change the NIS password. This command only changes the local password file (/etc/passwd), and not the NIS mas- ter password file. ERRORS
Your new password does not meet the minimum length requirement. You misspelled your new password or its verification. Your new password can not be activated. It must be different from your old password and your login name. FILES
Password file NIS directory SEE ALSO
passwd(1), passwd(4), ypfiles(4), yppasswdd(8) Network Administration yppasswd(1)
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