Exec format error. Binary file not executable

Question

I'm under

Linux version 3.3.4-5.fc17.x86_64 (mockbuild@x86-14.phx2.fedoraproject.org) (gcc version 4.7.0 20120504 (Red Hat 4.7.0-4) (GCC) ) #1 SMP Mon May 7 17:29:34 UTC 2012

trying to run a basic executable script.ksh file with permission 775 and containing:

#!/bin/ksh
echo "hello ya"

but I have:

$./script.ksh
 ./script.ksh: Exec format error. Binary file not executable.

the problem looks like to come from the shebang but I can't figure out why and how. I can run the script by doing this (note the weird output for the first line):

$ ksh script.ksh
script.ksh[1]: ?o?;??#!/bin/ksh: not found [No such file or directory]
hello ya

some (maybe) useful output:

$ file script.ksh
script.ksh: Korn shell script, UTF-8 Unicode (with BOM) text executable
$ which ksh
/bin/ksh

do you have an idea?

Answer 1

ok the problem come from the option

set bomb

in the .vimrc config file of vim. Comment this line solve the problem.

Answer 2

The first line begins with some invisible characters, as shown in your error message:

?o?;??#!/bin/ksh : not found

You can confirm this with

od -t x1c -N 10 script.ksh

Remove those characters, and it will now begin with the magic #! . One way you might be able to do that is

sed -i -e '1s/^[^#]*//' script.ksh

Test it first without the -i option (you can pipe it into od to check the result).