Permission denied in shell

General
1

I am trying to extract a rar file on osx using a shell execution. The unrar command executes fine, but when it tries to extract the files I get a permission denied. I tried a sh and a sudo before the execution, but nothing seems to work.

Can anyone give me some advise, please.

Thank you.

2

Can you post the command you’re passing to the shell?

3

Is it possible that you’re trying to extract into an un-writable folder location?

Also, what does theShell.ReadAll return?

4

when i use wkhtmltopdf in my application within misclibs folder on Macosx, i need to do a chmod on the executable when i got the permission denied.

5

Dim s As New Shell
s.Execute(“unrar x /Volumes/Music/test/test.rar”)

[quote=39939:@Tim Jones]Is it possible that you’re trying to extract into an un-writable folder location?
Also, what does theShell.ReadAll return?[/quote]

The folder is writeable. I can create files in it using BinaryStream.
The shell execution result is:

[code]UNRAR 4.20 freeware Copyright (c) 1993-2012 Alexander Roshal
Extracting from /Volumes/Music/test/test.rar

Cannot create text.txt
Permission denied
No files to extract
[/code]

6

Creating the rar files and extracting them from within the same application works.
But if I try to extract a rar that was made from a different app gives an permission denied.

It looks like the permissions are bound to the app that created the file under OS X?

7

Yes - it looks like RAR is trying to reset the permissions on the test.txt file to the original permissions and that’s where you’re getting the failure. What is you cd into /private/tmp/ before you extract?

Dim s As New Shell s.Execute("cd /private/tmp ; unrar x /Volumes/Music/test/test.rar")

8

Yes, in the tmp folder it extracts correctly.

9

Your shell command executes in a directory that has no write permissions, obviously.
Try this:
s.Execute(“pwd”)
And then see what it outputs. I guess it’s either “/”, i.e. the root dir, which is usually protected.

10

[quote=40068:@Thomas Tempelmann]Your shell command executes in a directory that has no write permissions, obviously.
Try this:
s.Execute(“pwd”)
And then see what it outputs. I guess it’s either “/”, i.e. the root dir, which is usually protected.[/quote]
BINGO!!!

I had my app creating a BAT file instead of just the one big command
The first line was CD
but I guess BASH is picky… CD didn’t change the path (PWD=/), but “cd” did

I stuck PWD and WHOAMI into the batch file… and now everything seems to work
now to get things pointing back where I want them to be