Bug 11395

Summary: Expect password change fails
Product: [Retired] Red Hat Linux Reporter: Tim Jung <tjung>
Component: tcltkAssignee: Jens Petersen <petersen>
Status: CLOSED NOTABUG QA Contact:
Severity: high Docs Contact:
Priority: medium    
Version: 6.2   
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Hardware: All   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2000-05-12 21:54:56 UTC Type: ---
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Description Tim Jung 2000-05-12 21:54:56 UTC 
I can not get Expect to do the example script from the O'Reilly "Exploring
Expect" book, where it changes the password. The example is on page #5.

It won't run reliable, and about 95% of the time it just hangs when you
run the script as root.

#!/usr/bin/expect -f
# wrapper to make passwd(1) be non-interactive
# Usage: chpassword user newpassword
spawn passwd [lindex $argv 0]
set password [lindex $argv 1]
expect "password:"
send "$password\r"
expect "password:"
send "$password\r"
expect eof
Comment 1 Jeff Johnson 2000-06-03 14:11:08 UTC 
Look at /usr/bin/autopasswd, there's some timing races that need to be dealt
with more carefully than the O'Reilley example would suggest.