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Full Discussion: Expext script reading a crypted file
Top Forums Shell Programming and Scripting Expext script reading a crypted file Post 302086650 by jim mcnamara on Friday 25th of August 2006 11:15:03 AM
Old 08-25-2006
Assuming I got what your problem is:
Code:
#!/bin/ksh
echo "password to encrypted file:\c"
stty noecho
read pass
stty echo
value=`crypt "$pass" < passwordfile | pr`
user=`echo "$value" | grep 'username=' | awk -F= '{print $2}'`
userpasswd=`echo "$value" | grep 'password=' | awk -F= '{print $2}'`
#....... you now have the user's username & password

This way the password to decrypt the file is not in any script, nor does is it on the commandline to allow ps -ef to show it.

If you have to use expect, then create the expect script as a here document
with the password input varaible -- input the same as part of the code above. A priori, expect looks like a messier solution overall. But I dunno what your requirements are.
 

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LEARN ABOUT LINUX

startpar

STARTPAR(8)						      System Manager's Manual						       STARTPAR(8)

NAME

       startpar - start runlevel scripts in parallel

SYNOPSIS

       startpar [-p par] [-i iorate] [-t timeout] [-T global_timeout] [-a arg] prg1 prg2 ...
       startpar [-p par] [-i iorate] [-t timeout] [-T global_timeout] -M [ boot|start|stop]

DESCRIPTION

       startpar  is  used  to run multiple run-level scripts in parallel.  The degree of parallelism on one CPU can be set with the -p option, the
       default is full parallelism. An argument to all of the scripts can be provided with the -a option.  Processes block  by	pending  I/O  will
       weighting by the factor 800.  To change this factor the option -i can be used to specify an other value.

       The  output  of	each  script is buffered and written when the script exits, so output lines of different scripts won't mix. You can modify
       this behaviour by setting a timeout.

       The timeout set with the -t option is used as buffer timeout. If the output buffer of a script is not empty and the last output was timeout
       seconds ago, startpar will flush the buffer.

       The  -T option timeout works more globally. If no output is printed for more than global_timeout seconds, startpar will flush the buffer of
       the script with the oldest output. Afterwards it will only print output of this script until it is finished.

       The -M option switches startpar into a make(1) like behaviour.  This option takes three different arguments:  boot,  start,  and  stop  for
       reading .depend.boot or .depend.start or .depend.stop respectively in the directory /etc/init.d/.  By scanning the boot and runlevel direc-
       tories in /etc/init.d/ it then executes the appropriate scripts in parallel.

FILES

       /etc/init.d/.depend.boot
       /etc/init.d/.depend.start
       /etc/init.d/.depend.stop

SEE ALSO

       init.d(7), insserv(8), startproc(8).

COPYRIGHT

       2003,2004 SuSE Linux AG, Nuernberg, Germany.
       2007 SuSE LINUX Products GmbH, Nuernberg, Germany.

AUTHOR

       Michael Schroeder <mls@suse.de>
       Takashi Iwai <tiwai@suse.de>
       Werner Fink <werner@suse.de>

								     Jun 2003							       STARTPAR(8)
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