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This is the aplication I want to run.

-rwxr-xr-x 1 manuel manuel 582841 Nov 22 09:51 PromServerMain

This is the fstab entry

/dev/sda8 /media/data0 ext4 defaults,user 0 2

This is the mountpoint

lrwxrwxrwx 1 manuel manuel     5 Nov 16 14:23 data -> data0
drwxrwxr-x 9 manuel manuel  4096 Nov 22 09:26 data0

This is what I get

manuel@P5KC /media/data/Projekte/PromServer/src $ ./PromServerMain
bash: ./PromServerMain: Keine Berechtigung
manuel@P5KC /media/data/Projekte/PromServer/src $ sudo ./PromServerMain
sudo: unable to execute ./PromServerMain: Permission denied

Even as root. I have no clue whats wrong. Any suggestions? System is Debian Wheezy Xfce.

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up vote 2 down vote accepted

/media/data0 is mounted with user option. That implies noexec so it is not allowed to run executables from the filesystem. You have to add exec:

/dev/sda8 /media/data0 ext4 defaults,user,exec 0 2

or remove the user option.

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"Permission denied" on an executable is often a misleading error message, unfortunately.

Firstly, is this a real executable or a script? If it's a script then the interpreter (#!/bin/whatever line at the top) may be wrong, itself broken or lacking permissions, or there is a stray carriage return at the end of the line.

If it's a real executable, run ldd PromServerMain and post the output. One of the required libraries is probably missing or broken.

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manuel@P5KC /media/data0/Projekte/PromServer/src $ ldd PromServerMain: not a dynamic executable But it is a executable. I compiled it . And it runs in other directories. – ManuelSchneid3r Nov 22 '12 at 10:03

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