Re: Executable shell scripts

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]


Arjan van de Ven <[email protected]> writes:

> On Sat, 2006-05-13 at 13:03 +0200, Mark Rosenstand wrote:

>> bash-3.00$ cat << EOF > test
>> > #!/bin/sh
>> > echo "yay, I'm executing!"
>> > EOF
>> bash-3.00$ chmod 111 test
>> bash-3.00$ ./test
>> /bin/sh: ./test: Permission denied
> is your script readable as well? 111 is just weird/odd.

It needs to be readable as well.  What ends up happening is that the
kernel sees the execute bit, looks at the shebang line and then does:

/bin/sh test

Since read permission is off, the shell's open() call fails.  It will
work fine if you use 755 as the permissions.

Every Unix I've ever seen works this way.  It'd be nice to have
unreadable executable scripts, but no one's ever done it.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at
Please read the FAQ at

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux