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chmod to stop cat from displaying the file?

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# 1  
Old 10-02-2010
Question chmod to stop cat from displaying the file?
Hi,

Im struggling with what chmod to change the permission of a file in the current directory named MyFile so the command "cat MyFile" fails to display the file.??
Last edited by Scott; 10-04-2010 at 07:50 AM.. Reason: Font and size changed
# 2  
Old 10-02-2010
Code:
chmod 000 MyFile

Smilie
# 3  
Old 10-04-2010
I am assuming that you do not want OTHERS to be able to see your file using CAT but you should be able to... in that case you can use:
Code:
 
chmod u+r,g=0,o=0 "Yourfile"

# 4  
Old 10-04-2010
if u want only the file owner to display the file , while the others can not,maybe the below can help u:
Code:
chmod 1700 Filename

# 5  
Old 10-04-2010
Quote:
Originally Posted by raghu_shekar
I am assuming that you do not want OTHERS to be able to see your file using CAT but you should be able to... in that case you can use:
Code:
 
chmod u+r,g=0,o=0 "Yourfile"

I do not think that is a valid command

Quote:
Originally Posted by vivisquirrel
if u want only the file owner to display the file , while the others can not,maybe the below can help u:
Code:
chmod 1700 Filename

The sticky bit (1000) has no function on a file in modern implementations.

---------- Post updated at 14:17 ---------- Previous update was at 14:14 ----------

It is not clear what you mean. This would take away all read permissions:
Code:
chmod -r MyFile

# 6  
Old 10-04-2010
To make the file only readable by the owner or root.

Code:
chmod u=rw,g=-rwx,o=-rwx MyFile

or

chmod 600 MyFile

# 7  
Old 10-04-2010
To make the file only readable by the owner, the command would be:
Code:
chmod go-r MyFile
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