Sticky bit

can any one explain the sticky bit concept??

hi friend

sticky bit - The bit in the mode of a Unix file which, if set for an executable, tells the kernel to keep the code loaded in swap space even after it has finished executing on the assumption that it is likely to be used again soon. This performance optimisation was included in some early (and recent?) versions of Unix to save reloading frequently used programs such as the shell or vi from disk.


for more info
Sticky bit - Wikipedia, the free encyclopedia
bye
:D

Thanks a lot friend, explanation is very good n understandable.
cheers
Sharif

Hi sharif,

[B]Sticky bit [/B]= The bit in the mode of a Unix file which, if set for an executable, tells the kernel to keep the code loaded in swap space even after it has finished executing on the assumption that it is likely to be used again soon. This performance optimisation was included in some early (and recent?) versions of Unix to save reloading frequently used programs such as the shell or vi from disk.

If the sticky bit is set on a directory, an unprivileged user may not delete or rename files of other users in that directory even if he has write access to the directory.

The Unix "ls" command displays a set sticky bit as a "t" in the permissions of a file or directory.

Regards

Nikhil Rattan

Thanksfor the information guys..

Hi Friends,

[COLOR="Blue"]The most common use of the sticky bit today is on directories. Generally this is set on the /temp directory to prevent ordinary users from deleting or moving other users files.
Sticky bit is set on non-executable files: those files, when accessed , will not be cached by the kernel. This is usually set on swap files to prevent access on the file from flushing more important data from the system cache, It is also used occasionally for benchmarking tests

Example:
The sticky bit can only be set by superuser, using the chmod command(chmod +t)

# chmod +t seshadri; ls -l seshadri

-rw-r--r-T 1 root other 0 Nov 10 12:57 seshadri

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Thanks & Regards
Seshadri Sethi:)

if it is correct ,please reply me ASAP


Thanks
Seshadri Sethi