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Sorry<br />
460 sould be 640
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I have a file that I would like to do the following to. &nbsp;<br />
Allow the owner to read <br />
Allow the owner to write <br />
Allow the owners group to read. &nbsp;<br />
<br />
Would it be chmod 640 file.txt &nbsp; <br />
<br />
Owner to read &nbsp;400 <br />
Owner to write &nbsp;200 <br />
Owners group to read &nbsp;040<br />
Rest of world do do nothing &nbsp;<br />
<br />
Add these together and one obtains 640. &nbsp;<br />
The question is first of all is this the correct syntax and if I want to give no permissions to everyone else <br />
is this 0? &nbsp;<br />
<br />

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I have a file that I would like to do the following to.  
Allow the owner to read 
Allow the owner to write 
Allow the owners group to read.  

Would it be chmod 640 file.txt   

Owner to read  400 
Owner to write  200 
Owners group to read  040
Rest of world do do nothing  

Add these together and one obtains 640.  
The question is first of all is this the correct syntax and if I want to give no permissions to everyone else 
is this 0?  



CHMOD file attributes

Unix is a multitasking, multi-user computer operating system originally developed in 1969 at Bell Labs. Today, it is a modern OS with many commercial flavors and licensees, including FreeBSD, Hewlett-Packard’s UX, IBM AIX and Apple Mac OS-X. Apart from its command-line interface, most UNIX variations support the standardized X Window System for GUIs, with the exception of the Mac OS, which uses a proprietary system.