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Top Forums UNIX for Dummies Questions & Answers Difference between normal Execute permission and GUID Post 302617297 by methyl on Monday 2nd of April 2012 11:44:21 AM
Old 04-02-2012
Please post what Operating System and version you have and on which hardware. Most (but not all) of the programs needing SUID are hardware and O/S specific.

One of the few common commands on my unix system which is both SUID and SGID is the wall command.


The first part of our post does not make sense to me. Please post a real world example.
 

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CHMOD(1)						      General Commands Manual							  CHMOD(1)

NAME
chmod - change mode SYNOPSIS
chmod mode file ... DESCRIPTION
The mode of each named file is changed according to mode, which may be an octal number or a symbolic change to the existing mode. A mode is an octal number constructed from the OR of the following modes. 0400 read by owner 0200 write by owner 0100 execute (search in directory) by owner 0070 read, write, execute (search) by group 0007 read, write, execute (search) by others A symbolic mode has the form: [who] op permission The who part is a combination of the letters u (for user's permissions), g (group) and o (other). The letter a stands for ugo. If who is omitted, the default is a. Op can be + to add permission to the file's mode, - to take away permission, and = to assign permission absolutely (all other bits will be reset). Permission is any combination of the letters r (read), w (write), x (execute), a (append only), and l (exclusive access). Only the owner of a file or the group leader of its group may change the file's mode. SOURCE
/sys/src/cmd/chmod.c SEE ALSO
ls(1), stat(2), stat(5) CHMOD(1)
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