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Full Discussion: Find exit with success with non executable directory
Top Forums UNIX for Dummies Questions & Answers Find exit with success with non executable directory Post 302972676 by chebarbudo on Monday 9th of May 2016 11:36:13 AM
Old 05-09-2016
Find exit with success with non executable directory
Hi there,

I'm quite surprised by the following behavior of find.
Code:
$ find -ls                  # I have a directory and a file in it
  8145    4 drwxr-xr-x   3 me me     4096 May 10 09:36 .
    87    4 drwxr-xr-x   2 me me     4096 May 10 09:36 ./dir
    88    0 -rw-r--r--   1 me me        0 May 10 09:36 ./dir/file
$ chmod 111 dir/
$ find -ls; echo $?         # If the directory is not readable, find fails because it cannot explore it
  8145    4 drwxr-xr-x   3 me me     4096 May 10 09:36 .
    87    4 d--x--x--x   2 me me     4096 May 10 09:36 ./dir
find: `./dir': Permission denied
1
$ chmod 444 dir/
$ find -ls; echo $?         # If the directory is not cd-able, find does NOT fail with an error although it fails to find the file in it
  8145    4 drwxr-xr-x   3 me me     4096 May 10 09:36 .
    87    4 dr--r--r--   2 me me     4096 May 10 09:36 ./dir
0

I'm using a fresh install of Debian 8 jessie
Code:
$ uname -a; cat /etc/debian_version
Linux debian 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt20-1+deb8u4 (2016-02-29) x86_64 GNU/Linux
8.3

How can I make sure find fails if it cannot list all files and folders?

Thanks in advance

Santiago
Last edited by chebarbudo; 05-10-2016 at 04:58 AM.. Reason: more details
 

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LEARN ABOUT DEBIAN

tiobench

tiobench(1)															       tiobench(1)

NAME

       tiobench - Threaded I/O bench

SYNOPSIS

       tiobench  [--help]  [--nofrag]  [--size	SizeInMB  [--size  ...]]   [--numruns  NumberOfRuns  [--numruns ...]]  [--dir TestDir [--dir ...]]
       [--block BlkSizeInBytes [--block ...]]  [--random NumberRandOpsPerThread [--random ...]]  [--threads NumberOfThreads [--threads ...]]

DESCRIPTION

       tiobench is a perl wrapper to tiotest calling it multiple times with varying sets of parameters as instructed.

   OPTIONS
       --help  Display a brief help and exit.

       --nofrag
	       Instructs tiobench to pass -W to tiotest so it waits for previous threads to finish before starting a new one in the writing phase.
	       For more info see the -W option in the tiotest(1) manpage.

       --size SizeInMB
	       The  total  size  in MBytes of the files may use together. If this option is not given, tiobench tries to be smart and figure out a
	       size making sense.

       --numruns NumberOfRuns
	       This number specifies over how many runs each test should be averaged.  Defaults to 1.

       --dir TestDir
	       The directory in which to test. Defaults to ., the current directory.

       --block BlkSizeInBytes
	       The blocksize in Bytes to use. Defaults to 4096.

       --random NumberRandOpsPerThread
	       Random I/O operations per thread. Defaults to 1000.

       --threads NumberOfThreads
	       The number of concurrent test threads. Defaults to 4.

       The options --size, --numruns, --dir, --block, --random, and --threads may be given multiple times to cover multiple cases,  for  instance:
       tiobench --block 4096 --block 8192 will first run through with a 4KB block size and then again with a 8KB block size.

       To  get usefull results the used file sizes should be a lot larger than the physical amount of memory you have. A good idea is to boot with
       16 Megs of RAM (Try passing the "mem=16M" option to the kernel to limit Linux to using a very small amount of memory) and into Single  User
       mode only.

SEE ALSO

       tiotest(1), bonnie(1), hdparm(8)

AUTHOR

       tiobench was written by James Manning <jmm@computer.org>.

       This  manual  page  was	written by Peter Palfrader <weasel@debian.org>, for the Debian GNU/Linux system (but may be used by others).

Mar-2001															       tiobench(1)
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