Default read/write/execute permissions Post: 302228788

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Top Forums UNIX for Dummies Questions & Answers Default read/write/execute permissions Post 302228788 by joeyg on Monday 25th of August 2008 12:22:10 PM

08-25-2008

Registered User

Default read/write/execute permissions

I am perplexed that my script execution is not always consistent in creating new files. Specifically, my group read/write/execute permissions. For instance, take a look at the following:

Code:

-rw-rw----   1 jg   dp  18648 Aug 22 10:06 nx081508.txt
-rw-rw----   1 jg   dp  22422 Aug 22 10:06 nx081808.txt
-rw-rw----   1 jg   dp   6993 Aug 22 10:06 nx081908.txt
-rw-rw----   1 jg   dp  25308 Aug 22 10:06 nx082008.txt
-rw-rw----   1 jg   dp  15873 Aug 22 10:06 nx082108.txt
-rw-rw----   1 jg   dp  95319 Aug 22 10:06 nx082208.all
-rw-r-----   1 jg   dp  88911 Aug 22 10:06 nx082208.txt
-rw-rw----   1 jg   dp  94518 Aug 22 10:06 nx082208.uid

One of my .txt files does not have group 'w' access. And this can become a problem is another user needs to do something with that file.

I know, I could have my script do a chmod to the *.txt files after it is done, but that seems silly.

So, any idea where this might be set such that users sometimes set correctly and sometimes not?

joeyg

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LEARN ABOUT PLAN9

chmod

CHMOD(1)						      General Commands Manual							  CHMOD(1)

NAME

       chmod - change mode

SYNOPSIS

       chmod mode file ...

DESCRIPTION

       The  mode  of each named file is changed according to mode, which may be an octal number or a symbolic change to the existing mode.  A mode
       is an octal number constructed from the OR of the following modes.

       0400   read by owner

       0200   write by owner

       0100   execute (search in directory) by owner

       0070   read, write, execute (search) by group

       0007   read, write, execute (search) by others

       A symbolic mode has the form:

	      [who] op permission

       The who part is a combination of the letters u (for user's permissions), g (group) and o (other).  The letter a stands for ugo.	If who	is
       omitted, the default is a.

       Op  can be + to add permission to the file's mode, - to take away permission, and = to assign permission absolutely (all other bits will be
       reset).

       Permission is any combination of the letters r (read), w (write), x (execute), a (append only), and l (exclusive access).

       Only the owner of a file or the group leader of its group may change the file's mode.

SOURCE

       /sys/src/cmd/chmod.c

SEE ALSO

       ls(1), stat(2), stat(5)

																	  CHMOD(1)