[Tutor] problems with the shebang line and linux

[Nick Lunt]

Hi Brian,

it's the ^M characters that are catching you out here.

Often files from a windows PC will have ^M as the newline char when viewed
in linux/unix.

On linux you should be able to check if a file has ^M in by running either
'vi -b filename' or 'sed -n l filename'.

Try this with the file

vi filename
escape
:%s/^M//

That should get rid of all the ^M chars. (not on linux at the mo so not 100%
sure).
The ^M is done in vi by actually typing in 'Ctl-V M' not shift6 M.

What I wrote above may not sound too clear, but feel free to email me off
list if you need any vi or linux commandline help (altho ive never used
ubuntu so anything ubuntu specific I wont be much use with).

Good luck,
Nick .


> -----Original Message-----
> From: tutor-bounces at python.org [mailto:tutor-bounces at python.org]On
> Behalf Of Brian van den Broek
> Sent: 16 February 2006 13:36
> To: Tutor
> Subject: [Tutor] problems with the shebang line and linux
>
>
> Hi all,
>
> I've switched to Linux fairly recently and am still at the fumbling
> about stage :-)  I'm having a devil of a time with the shebang line
> and running a py file from a command line.
>
> I wrote the following little test script with IDLE 1.1.2 under Python
> 2.4.2 on Ubuntu 5.10:
>
> <code>
> #!/usr/bin/python
> print "Working!"
> </code>
>
> I then C & P'ed it to another .py file. testerlyfoo.py is the
> original, testerlybar.py is the pasted copy.
>
> Here's my command line results:
>
> brian at Cedric:~$ which python
> /usr/bin/python
> brian at Cedric:~$ cd /media/windata/
> brian at Cedric:/media/windata$ ./testerlyfoo.py
> Working!
> brian at Cedric:/media/windata$ ./testerlybar.py
> bash: ./testerlybar.py: /usr/bin/python^M: bad interpreter: No such
> file or directory
> brian at Cedric:/media/windata$
>
> I even retyped the testerlybar.py file, but I end up with the same
> results as when the small script was copied and pasted.
>
> Likewise, I got the same results after saving the two files to my Home
> directory on the hail mary thought that perhaps the fact I'd save the
> originals on a FAT32 mounted drive might be making things goofy.
>
> I'm stumped. Any steps I can take to work out what's going on?
>
> Best to all,
>
> Brian vdB
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