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Top Forums UNIX for Dummies Questions & Answers Need Help Understanding a Unix Command Post 302092444 by nathan on Monday 9th of October 2006 11:07:27 PM
Old 10-10-2006
You should really read this tutorial on UNIX file permissions. It should help you understand the numeric vs. "rwx" notation.
 

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LCHMOD(3)						   BSD Library Functions Manual 						 LCHMOD(3)

NAME
lchmod -- change mode of file SYNOPSIS
#include <sys/stat.h> #include <unistd.h> int lchmod(const char *path, mode_t flags); DESCRIPTION
The function lchmod() sets the file permission bits of the file specified by the pathname path to mode. See chmod(2) for the values of the flags. The lchmod() call is like chmod() except when the named file is a symbolic link, in which case lchmod() will change the flags of the link itself, rather than the file it points to. NOTE
Instead of being a system call, lchmod() is emulated using setattrlist(2). Not all file systems support setattrlist(2). RETURN VALUES
Upon successful completion, a value of 0 is returned. Otherwise, -1 is returned and the global variable errno is set to indicate the error. ERRORS
The lchmod() call may return the same errors as chmod(2) and setattrlist(2). SEE ALSO
chmod(2), setattrlist(2) BSD
Oct 31, 2005 BSD
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