How do I remove commands? Post: 302459657

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Top Forums UNIX for Dummies Questions & Answers How do I remove commands? Post 302459657 by bakunin on Tuesday 5th of October 2010 06:55:32 AM

10-05-2010

Registered User

I do not know which operating system you are using and chances are that I'm not that well accustomed to whatever you use. But there are some general principles which pay off if adhered to:

1) Do not - never ever - remove binaries by deleting them, as was suggested by citaylor. If you have a package management (like the mentioned rpm) use ONLY that to get software packages you do not want to be used out of the system.

2) Every Unix has a standard set of commands and rsh (rlogin, rexec, ...) are such standard commands. You might not want them to be used without further ado, but deleting them is the wrong way to accomplish what you want. Remove ".rlogin"-files (and probably similar ones, like ".netrc") from user-homes (to make password-less access to systems impossible), deactivate the respective services in inetd.conf or employ similar methods.

3) Modifying the rights of executables is a possible way, but be aware, that you modify the system - like with removing the executables altogether. If you still want to go that way you might want to create an rpm-package which does the changes and only bring this to the system - the package should undo these changes upon deinstallation of course.

I hope this helps.

bakunin

bakunin

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uname

UNAME(1)						    BSD General Commands Manual 						  UNAME(1)

NAME

     uname -- Print operating system name

SYNOPSIS

     uname [-amnprsv]

DESCRIPTION

     The uname utility writes symbols representing one or more system characteristics to the standard output.

     The following options are available:

     -a      Behave as though all of the options -mnrsv were specified.

     -m      print the machine hardware name.

     -n      print the nodename (the nodename may be a name that the system is known by to a communications network).

     -p      print the machine processor architecture name.

     -r      print the operating system release.

     -s      print the operating system name.

     -v      print the operating system version.

     If no options are specified, uname prints the operating system name as if the -s option had been specified.

SEE ALSO

     hostname(1), machine(1), sw_vers(1), uname(3)

STANDARDS

     The uname utility conforms to IEEE Std 1003.2-1992 (``POSIX.2'').	The -p option is an extension to the standard.

BSD
								 November 9, 1998							       BSD

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