Re: Error in script "invalid interpreter" (longish)

Robin Mordasiewicz wrote:

On Mon, 17 Oct 2005, Mike McCarty wrote:

I'm trying to install lcc (compiler) from source, and encountered
an error which I don't understand. During the install, a script
is executed which fails. I've stripped off non-essential stuff...

$ env src/run.sh
env: src/run.sh: Permission denied
$ pwd
/mnt/cdrom/lcc/4.2
$ ls -ld .
dr-xr-xr-x  14 root root 4096 Oct 14 15:50 .
$ ls -ld src
dr-xr-xr-x  2 root root 6144 Oct 14 15:50 src
$ ls -ld src/run.sh
-r-xr-xr-x  1 root root 1586 Jul  2  1997 src/run.sh
$ ./src/run.sh
bash: ./src/run.sh: /bin/sh: bad interpreter: Permission denied
$ dumphex src/run.sh


00 23 21 2F 62  69 6E 2F 73  68 0A 23 20  24 49 64 3A |#!/bin/sh.# $Id:|
10 20 72 75 6E  2E 73 68 2C  76 20 31 2E  31 31 20 31 | run.sh,v 1.11 1|
20 39 39 37 2F  30 37 2F 30  33 20 30 30  3A 31 35 3A |997/07/03 00:15:|
30 31 30 20 64  72 68 20 45  78 70 20 24  0A 23 20 72 |10 drh Exp $.# r|
40 75 6E 20 2E  2E 2E 2F 74  61 72 67 65  74 2F 6F 73 |un .../target/os|
50 2F 74 73 74  2F 66 6F 6F  2E 73 20 5B  20 72 65 6D |/tst/foo.s [ rem|
60 6F 74 65 68  6F 73 74 20  5D 0A 0A 23  20 73 65 74 |otehost ]..# set|


...


$ ls -ld /bin/sh
lrwxrwxrwx  1 root root 4 Oct 20  2004 /bin/sh -> bash
$ ls -ld /bin/bash
-rwxr-xr-x  1 root root 593304 Mar 11  2004 /bin/bash
$ /bin/sh
sh-2.05b$ exit
exit
$


I thought at first that it might be the infamous MSDOS CRs at the
ends of the lines, but the hex dump proves otherwise. The link
/bin/sh exists, and has correct permissons, as does the file
/bin/bash. It even runs.

Can anyone lend me a clue? I have't got any.

shot in the dark. Are you running this from your home directory which is mounted via nfs and has the noexec flag set ?

I have exactly one machine. I untarred the tarball from the repo, and
burned the files onto CDROM. The lcc website states that it is
specifically intended to be used this way. I mounted the CDROM, and
made it my working directory. The script is on the CDROM.

However, /bin/sh is on this machine, and it appears that /bin/sh is
specifically what env is having troubles with. And I can run it
directly, just not from the script.

$ pwd
/mnt/cdrom/lcc/4.2

$ ls -ld /mnt
drwxr-xr-x  14 root root 4096 Sep  8 17:05 /mnt

$ ls -ld /mnt/cdrom
dr-xr-xr-x  3 root root 2048 Oct  7 10:16 /mnt/cdrom

$ ls -ld /mnt/cdrom/lcc
dr-xr-xr-x  4 root root 2048 Oct 14 15:50 /mnt/cdrom/lcc

$ ls -ld /mnt/cdrom/lcc/4.2
dr-xr-xr-x  14 root root 4096 Oct 14 15:50 /mnt/cdrom/lcc/4.2

$ ls -ld /mnt/cdrom/lcc/4.2/src
dr-xr-xr-x  2 root root 6144 Oct 14 15:50 /mnt/cdrom/lcc/4.2/src

$ ls -ld /mnt/cdrom/lcc/4.2/src/run.sh
-r-xr-xr-x  1 root root 1586 Jul  2  1997 /mnt/cdrom/lcc/4.2/src/run.sh

$ head /mnt/cdrom/lcc/4.2/src/run.sh
#!/bin/sh
# $Id: run.sh,v 1.11 1997/07/03 00:15:10 drh Exp $
# run .../target/os/tst/foo.s [ remotehost ]

# set -x
target=`echo $1 | awk -F/ '{ print $(NF-3) }'`
os=`echo $1 | awk -F/ '{ print $(NF-2) }'`
dir=$target/$os

case "$1" in

$ /mnt/cdrom/lcc/4.2/src/run.sh

$ /bin/sh
sh-2.05b$ ls
alpha  CPYRIGHT   doc  include  lib  makefile     mips    sparc  tst
cpp    custom.mk  etc  lburg    LOG  makefile.nt  README  src    x86
sh-2.05b$ exit
exit

Now, the build directory is in my home tree...

$ set | grep BUILDDIR
BUILDDIR=/home/jmccarty/build/lcc/4.2/x86-linux

$ ls -ld /home
drwxr-xr-x  4 root root 4096 Nov  4  2004 /home

$ ls -ld /home/jmccarty
drwxr-x---  54 jmccarty jmccarty 4096 Oct 17 12:10 /home/jmccarty

$ ls -ld /home/jmccarty/build
drwxrwxr-x  3 jmccarty jmccarty 4096 Oct 14 15:55 /home/jmccarty/build

$ ls -ld /home/jmccarty/build/lcc
drwxrwxr-x  3 jmccarty jmccarty 4096 Oct 14 15:55
home/jmccarty/build/lcc

$ ls -ld /home/jmccarty/build/lcc/4.2

$ ls -ld /home/jmccarty/build/lcc/4.2/x86-linux

$ whoami
jmccarty

$ finger jmccarty
Login: jmccarty                         Name: Mike McCarty
Directory: /home/jmccarty               Shell: /bin/bash
On since Fri Oct 14 10:39 (CDT) on :0 (messages off)
On since Fri Oct 14 16:17 (CDT) on pts/1 from :0.0
On since Fri Oct 14 16:20 (CDT) on pts/3 from :0.0
   2 days 21 hours idle
On since Fri Oct 14 13:23 (CDT) on pts/5 from :0.0
   3 days idle
On since Fri Oct 14 15:28 (CDT) on pts/8 from :0.0
   12 minutes 14 seconds idle
No mail.
No Plan.


Mike
--
p="p=%c%s%c;main(){printf(p,34,p,34);}";main(){printf(p,34,p,34);}
This message made from 100% recycled bits.
You have found the bank of Larn.
I can explain it for you, but I can't understand it for you.
I speak only for myself, and I am unanimous in that!