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In FreeBSD and also in Linux, how can I get the numerical chmod value of a file? For example, 644 instead of -rw-r--r--? I need an automatic way for a Bash script.

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214

You can get the value directly using a stat output format, e.g. BSD/OS X:

stat -f "%OLp" <file>

or in Linux

stat --format '%a' <file>

and in busybox

 stat -c '%a' <file>
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  • 2
    single quotes are not needed, and --format can be abbreviated -c. This works: stat -c %a <file>
    – johny why
    Sep 23 '16 at 17:53
  • I needed the busybox answer on Ubuntu, otherwise 'stat: cannot read file system information for '%OLp': No such file or directory'
    – tofutim
    Mar 11 '18 at 13:34
  • I use lubuntu, have busybox and stat -c gives the result, but -f spits out error and prints blocks and inodes info, similar to tofutim.
    – Timo
    May 14 at 19:32
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use stat YOUR_FILE unless write script that calculate :

rwx rwx rwx ==> ( r = 4 ) if set + ( w = 2) if set + (x = 1) if set , for example:
You have :
-rw-wxrw- => (4+2+0)(0+2+1)(4+2+0) = 0636 
First argument before 9 permissions is one of :
- = regular file
d =  directory
b = block device
c = character device
s = socket
p = pipe
f = fifo

By the way , I use stat command on Linux box, not freebsd, because it investigate HFS probably work with UFS.

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  • Yes, i found it under FreeBSD box, use stat -x YOUR_FILE under FreeBSD box Sep 1 '12 at 19:02
  • stat -r YOUR_FILE |awk '{print $3}' gives your permission. Sep 1 '12 at 19:09
  • command to show friendly? not only a number like 666 or codes -rw-wxrw- but a text with explanations about each permission. Dec 3 '18 at 19:18
  • @PeterKrauss , It's better to write an awk to retrive numerical result. Dec 6 '18 at 16:07
  • Thanks @PersianGulf. Hum... No plug-and-play standard way.... Dec 6 '18 at 23:04
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Some additional information on stat:

$ stat -c %a file.txt

777  

$ stat -c %A file.txt

-rwxrwxrwx
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  • it is stat -f %A file.txt under mac, it would return 644 or some other 3 digital number. Jun 15 '17 at 7:11
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try this to list all

stat --format "%a  %n" *
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