[sf-lug] What is the sticky bit?

jim jim at well.com
Sat Apr 3 10:37:27 PDT 2010



   the stat command has lots of format sequence options, 
similar to the  date  command, uses the -c option 
followed by %_ where _ is one of the "format sequence" 
options; for examples: 
$ stat -c %A ~ 
... 
$ stat -c %A%x ~ 
...
$ stat -c %A%x%U ~ 

   the man page suggests using 
$ info coreutils 'stat invocation' 
which presents a lot of invocation for those who can 
use emacs editing commands. 

   thanks for that, rick. 



On Fri, 2010-04-02 at 09:15 -0700, Rick Moen wrote:
> Quoting Grant Bowman (grantbow at gmail.com):
> 
> > What is the sticky bit?
> 
> Ah, one of my standard interview questions.  ;->
> 
> > So what is a directory?  It is a special type of inode.  Each block
> > group has it's own inode table that contains not only the file name
> > and inode reference but in later ext2 "revisions" also contains a copy
> > of the file type of the referenced inode.  I hope others on the list
> > will find some of this useful.
> 
> Tip:  Play around with the "stat" command, and you'll learn some
> rather interesting things about what data are stored in inodes for files 
> you ask the "stat" command about (including for directories).
> 
> $ stat /home/rick
>   File: `rick'
>   Size: 20480           Blocks: 40         IO Block: 4096   directory
> Device: 903h/2307d      Inode: 162881      Links: 53
> Access: (0755/drwxr-xr-x)  Uid: ( 1000/    rick)   Gid: ( 1000/    rick)
> Access: 2010-04-02 09:11:58.000000000 -0700
> Modify: 2010-04-02 09:10:02.000000000 -0700
> Change: 2010-04-02 09:10:02.000000000 -0700
> $
> 
> 
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