How to search for files whose suid bit is set?

[shivajikobardan]

 I'm asking this question because I'm seeing multiple variants of this command.

1)

find / -perm /u=s file_name

or

find / -perm -u=s file_name

 

2)

find / -perm 4666

or

find / -perm 4000

or

find / -perm /4000

Source of my confusion:

https://unix.stackexchange.com/questions/180867/how-to-search-for-all-suid-sgid-files

 

 

[shivajikobardan]

Quoting from the man pages.

Quote

-perm mode
              File's  permission  bits are exactly mode (octal or symbolic).  Since an exact match is required, if you want to use this form for symbolic modes, you may have to
              specify a rather complex mode string.  For example `-perm g=w' will only match files which have mode 0020 (that is, ones for which group write permission  is  the
              only permission set).  It is more likely that you will want to use the `/' or `-' forms, for example `-perm -g=w', which matches any file with group write permis‐
              sion.  See the EXAMPLES section for some illustrative examples.

       -perm -mode
              All of the permission bits mode are set for the file.  Symbolic modes are accepted in this form, and this is usually the way in which you would want to use  them.
              You must specify `u', `g' or `o' if you use a symbolic mode.  See the EXAMPLES section for some illustrative examples.

       -perm /mode
              Any  of  the  permission  bits mode are set for the file.  Symbolic modes are accepted in this form.  You must specify `u', `g' or `o' if you use a symbolic mode.
              See the EXAMPLES section for some illustrative examples.  If no permission bits in mode are set, this test matches any file (the idea here  is  to  be  consistent
              with the behaviour of -perm -000).

       -perm +mode
              This is no longer supported (and has been deprecated since 2005).  Use -perm /mode instead.