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 MINIX

chmod

CHMOD(1)						      General Commands Manual							  CHMOD(1)

NAME

       chmod - change access mode for files

SYNOPSIS

       chmod [-R] mode file ...

OPTIONS

       -R     Change hierarchies recursively

EXAMPLES

       chmod 755 file	   # Owner: rwx Group: r-x Others: r-x

       chmod +x file1 file2
			   # Make file1 and file2 executable

       chmod a-w file	   # Make file read only

       chmod u+s file	   # Turn on SETUID for file

       chmod -R o+w dir    # Allow writing for all files in dir

DESCRIPTION

       The  given mode is applied to each file in the file list. If the -R flag is present, the files in a directory will be changed as well.  The
       mode can be either absolute or symbolic. Absolute modes are given as an octal number that represents the new file mode. The mode  bits  are
       defined as follows:

	 4000	 Set effective user id on execution to file's owner id
	 2000	 Set effective group id on execution to file's group id
	 0400	 file is readable by the owner of the file
	 0200	 writeable by owner
	 0100	 executable by owner
	 0070	 same as above, for other users in the same group
	 0007	 same as above, for all other users

       Symbolic modes modify the current file mode in a specified way. The form is:

	 [who] op permissions { op permissions ...} {, [who] op ... }

       The  possibilities for who are u, g, o, and a, standing for user, group, other and all, respectively.  If who is omitted, a is assumed, but
       the current umask is used.  The op can be +, -, or =;  + turns on the given permissions, - turns them off; = sets  the  permissions  exclu-
       sively for the given who.  For example g=x sets the group permissions to --x.

       The  possible  permissions are r, w, x; which stand for read, write, and execute;  s turns on the set effective user/group id bits.  s only
       makes sense with u and g; o+s is harmless.

SEE ALSO

       ls(1), chmod(2).

																	  CHMOD(1)