Ask for advice !! An error is reported when the shell script for batch password modification is run.

Ask for advice !! An error is reported when you run shell scripts that modify passwords in batches. For details, refer to Linux general technology-Linux programming and kernel information. Cainiao wrote a SHELL script to modify passwords in batches and run OK in the test system. However, a problem occurs in the formal environment. : 0wl; l1
Thank you !!! (6) m: B

The error message is as follows:
[……] #./Autochg. sh u. p
Spawn passwd myp
Changing password for user myp.
./Autochg. sh: line 7: 321 Segmentation fault./login CT. sh $ USERNAME $ PASSWORD

The script is as follows:
1. create user/password pair file u. p
Myp: 1111
2. Create an audit CT. sh script file.
#! /Usr/bin/CT
Set username [lindex $ argv 0]
Set password [lindex $ argv 1]
Spawn passwd [lindex $ argv 0]
Wrong CT "* assword :"
Send "$ password \ n"
Wrong CT "* assword :"
Send "$ password \ n"
CT eof
Exit
3. Create the autochg. sh file and call keep CT. sh in this file.
#! /Bin/sh
For I in 'cat $1'
Do
USERNAME =$ {I % :*}
PASSWORD =$ {I #*:}
./Keep CT. sh $ USERNAME $ PASSWORD
Done