OBJECTIVE: Users in one group need access to files in another group.

    UNIX/Linux allows users to change permissions on their own files.   

  cd (to the directory where your files are)

  ls -al  (view the files and see what the permissions are:
		if:    -rw-r--r--   then only YOU can write to them,
		if:    -rw-rw-r--   then anyone in your GROUP can write to them,
		if:    -rw-rw-rw-   then ANYONE with access to the system can write to them.)

To change permissions so ANYONE can write to them,
  
      chmod 666 (filename or filenames, wildcards are ok)   #  not recommended for security.

To change permissions back so only your group can write to them:

  chmod 664 (...)

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THERE IS A DEFAULT SETTING FOR NEW FILE CREATION in UNIX called umask.  

type "umask" at the command line, if it comes up "022" then files you create
will have "-rw-r--r--" permissions.   

To open your files up completely, change your umask to 000.  # not recommended for security.
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fwiw, the file permission code is as follows:

	421421421
	rwxrwxrwx   

r=read
w=write
x=executable (do NOT make regular files executable)

the first set of three (rwx) is the owner, second set group and last set other.

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a umask of 0022 or 022 is acceptable:
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--> umask
0022
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--> touch testperms
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--> ll testperms
-rw-r--r-- 1 luser users 0 Jan 28 13:03 testperms
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