[GRASS-user] Newbie, running python on Mac, error on execl

GRASS GRASS user
1

Hi,

I have just started writing scripts using python for Grass on Mac. I copied
the example below from the library and ran it.

"
#!/usr/bin/env python

#%module
#% description: Checks if vector map is 3D
#% keywords: vector
#%end
#%option
#% key: map
#% type: string
#% gisprompt: old,vector,vector
#% key_desc: name
#% description: Name of vector map
#% required: yes
#%end

import sys
import grass.script as grass

def main():
    info = grass.parse_command('v.info',
                               flags = 't',
                               map = options['map'])
    return 0

if __name__ == "__main__":
    options, flags = grass.parser()
    sys.exit(main())

"
When I ran the program using the GUI, it gave me an error without
explanation, so I tried the command line running from inside the Grass:

"python hi.py map=geology@PERMANENT"

and I got the following error:

"execl() failed: Permission denied"

I would appreciate if anyone can help.

Ahmad
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2

The first thing to check would be the file permission bits on the file
"hi.py" to be sure the execute bit is set. From your command line, just
type "ls -al hi.py". The first 10 characters from the output should show
you what bits are set and you are looking for an "x" in the fourth
character. For example:

-rwxr--r--

This means the owner has read,write,execute privileges while group and world
have read only. If you don't have execute privileges, simple type:

"chmod u+x hi.py"

Hope this helps. The same thing was driving me batty until this morning on
a Linux machine after splitting a script into two parts. The old one had
the execute bit set but the new one didn't.

Randy

On 04/06/10 12:31 PM, "AhmadKhaled" <vbkhp@yahoo.com> wrote:

"python hi.py map=geology@PERMANENT"

and I got the following error:

"execl() failed: Permission denied"