Q: What does -rw-r--r--  mean?

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(109865)

1. The section starting with 'The Long Format'.

2. Yes.

(109867)

You probably don't need to use the 'user permissions repair' but this next page has some general info on permissions…

Troubleshooting permissions issues in Mac OS X

So does the file Niel linked to.

The next three fields are three characters each: owner permissions, group permissions, and other permissions. Each field has three character positions:

  1. If r, the file is readable; if -, it is not readable.
  2. If w, the file is writable; if -, it is not writable.
  3. The first of the following that applies:

   S  If in the owner permissions, the file is not executable and set-user-ID mode is set. If in the group permissions, the file is not executable and set-group-ID mode is set.

   s  If in the owner permissions, the file is executable and set-user-ID mode is set. If in the group permissions, the file is executable and setgroup-ID mode is set.

   x  The file is executable or the directory is searchable.

   -  The file is neither readable, writable, executable, nor set-user-ID nor set-group-ID mode, nor sticky. (See below.)

  These next two apply only to the third character in the last group (other permissions).

   T  The sticky bit is set (mode 1000), but not execute or search permission. (See chmod(1) or sticky(8).)

   t  The sticky bit is set (mode 1000), and is searchable or executable. (See chmod(1) or sticky(8).)