The standard UNIX way to show that a number is octal is to start it with a zero. GNU chmod will assume the mode you're giving it is octal anyway, but it's safest to prepend the zero. Finally, if you see a + at the end of the modestring:-rwxr-xr-x+ then that means the file has extended permissions, and you'll need more than chmod.

Oct 9, 2013 · Octal: chmod 760 file. Note how the existing permissions left unchanged must be repeated when using the octal notation. Symbolic: chmod o-rwx file. With symbolic notation, the existing file permissions do not matter. Set setuid: Octal: chmod 4764 file. Symbolic: chmod u+s file. Set setgid: Octal: chmod 2764 file; Symbolic chmod g+s file

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.

Feb 10, 2015 · chmod can also set permissions using numbers. Using numbers is another method which allows you to edit the permissions for all three owner, group, and others at the same time. This basic structure of the code is this: chmod xxx file/directory Where xxx is a 3 digit number where each digit can be anything from 1 to 7.

Oct 27, 2011 · chmod is a Linux command that will let you "set permissions" (aka, assign who can read/write/execute) on a file. Usage: chmod permissions file OR: Usage: chmod permission1_permission2_permission3 file When using chmod, you need to be aware that there are three types of Linux users that...

Oct 28, 2016 · The letter version adds or subtracts permissions as opposed to setting absolute values, for example: chmod ugo+rwx or chmod u-rw or chmod u=rwx,g=rwx,o=rwx or a=rwx (a means all) chmod -R ugo-rwx * (revokes all permissions for the current directory aswell as its sub directories), chmod ugo= * (revokes all permissions for all files in the ...

Please note that chmod 777 filename is the equivalent of chmod 0777 filename in this example. The first octal digit sets the setuid, setgid and sticky bits (see this article for more details on setuid/setgid). octal 2 means to set group ID on the file. So, the equivalent would be to do a chmod a+rwx filename, then chmod g+s filename.

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Oct 27, 2011 · chmod 020 mydoc.txt write by group chmod 002 mydoc.txt write by anybody chmod 100 mydoc.txt execute by owner chmod 010 mydoc.txt execute by group chmod 001 mydoc.txt execute by anybody Wait! I don't get it... there aren't enough permissions to do what I want! Good call. You need to add up the numbers to get other types of permissions...

Mar 31, 2010 · chmod octal numbers. Is there an easy way to remember what the each of the 8 numbers, 0-7 represent for ...