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Restrict user from breaking out of login script

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Operating Systems SCO Restrict user from breaking out of login script
# 1  
Old 12-02-2009
Restrict user from breaking out of login script
I have a login script similar to where the user's shell in /etc/passwd is set to csh:

echo "In .login"
setenv SHELL /bin/csh

/bin/sh -c trap "" 1 2 3 5 6 7 8 15

/path/to/application
logout
---------------------

however, even with the trap command the user is still able to break out and get to the command prompt before the echo statement is displayed. does anyone have a method for locking a user down so they cannot exit to the command prompt before the application runs?
# 2  
Old 12-02-2009
change /path/to/app
to
exec /path/to/app

Why are you using the c-shell
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