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Full Discussion: Can I prevent a script from being viewed?
Top Forums UNIX for Advanced & Expert Users Can I prevent a script from being viewed? Post 302994779 by Don Cragun on Tuesday 28th of March 2017 03:37:18 AM
Old 03-28-2017
You are talking about two different things. If a file is encrypted, only users who know the pass phrase or who have enough compute power to determine the pass phrase by brute force can read the plain text version of that encrypted file.

The topic of this thread, however, is how can a user encrypt a shell script file and let another user who does not know the pass phrase used to encrypt that script run that script without being able to read it as clear text. And, the answer is that it cannot be done.

If a script is obfuscated by its owner and can be run by somebody else without knowing the obfuscation method used, then anyone who has read access to the file can also read the clear text of that script and/or run the file.

And, if a file is made unreadable just by changing its mode, that will not keep any root user on that system from reading that file (both because root can read any file with any read permission bit set and because root can change the mode of any file to any mode they choose.)
 

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LEARN ABOUT CENTOS

vlvindex

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

NAME

       vlvindex - Directory Server script for VLV indexing

SYNOPSIS

       vlvindex [-Z serverID] -n backendname | {-s includesuffix}* -T vlvTag [-d debuglevel] [-h]

DESCRIPTION

       Creates	virtual  list  view (VLV) indexes, known in the Directory Server Console as browsing indexes. VLV indexes introduce flexibility in
       the way search results are viewed.  VLV index configuration must already exist prior to running this script. The Directory Server  must	be
       stopped before running this script.

OPTIONS

       A summary of options is included below:

       -Z Server Identifier
	      The server ID of the Directory Server instance.  If there is only one instance on the system, this option can be skipped.

       -n Backend Name
	      The name of the LDBM database to reindex.  Example: userRoot

       -s includeSuffix
	      Specifies suffixes to be included or the subtrees to be included

       -T vlvTag
	      This is the name of the vlv index entry under cn=config.

       -d Debug Level
	      Settings the debugging level.

       -h
	      Display the usage.

EXAMPLE

       vlvindex -n userRoot -T myVLVIndex -Z instance2

DIAGNOSTICS

       Exit status is zero if no errors occur.	Errors result in a non-zero exit status and a diagnostic message being written to standard error.

AUTHOR

       vlvindex was written by the 389 Project.

REPORTING BUGS

       Report bugs to http://bugzilla.redhat.com.

COPYRIGHT

       Copyright (C) 2013 Red Hat, Inc.

								    Mar 5, 2013 						       VLVINDEX(8)
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