I accidentally changed to only write permission on /usr/bin... please Help!

UNIX macOS
1

I accidentally changed to sudo chmod a=w to my /usr/bin folder on my macbook with OS 10.5.8... Please help! I can't even get into a terminal correctly cause it displays:

-bash: uname: command not found
-bash: cut: command not found
-bash: uname: command not found
-bash: cut: command not found
-bash: /usr/bin/perl: Permission denied
-bash: [: too many arguments
-bash: grep: command not found
-bash: grep: command not found
-bash: cut: command not found
-bash: grep: command not found
-bash: cut: command not found
-bash: grep: command not found
-bash: /Users/ro/.gem/ruby/1.8/bin: No such file or directory
RosBook:~ ro$

And when I trying to changed back the permission set it doesn't even recognize the "sudo" command... I have tryied several times to Repair Disk Permissions using disk utility but it doesn't seem to work either, can someone please help me through this?

Many thanks

2

On the OSX, isn't chmod in the /bin directory?

3

Yes, the thing is I need to use the sudo as follow:

RosBook:~ ro$ sudo chmod 777 /usr/bin
-bash: sudo: command not found

But sudo is not found given that I don't have neither read permission nor execution permission ....

4

boot from dvd and change the permissions back...

5

My guess is he does not have the boot disks. I certainly don't have my OSX boot disks or DVD.

If not, another option might be to grab the required binaries from the Apple Darwin Open Source download site.

I would upload some of what he needs, but I use an older PowerPC iMac, not an Intel box.

6

hmmm... but if the dvd IS available, it should be an easy task to repair the permissions. if not... damn :wink:

7

Cheers! It worked wonderfully :slight_smile: