Re: strange "Cannot execute binary file" error message

["Brian K. White" <brian aljex com>]

----- Original Message -----
From: "George Gallen" <ggallen slackinc com>
To: <enigma-list redhat com>
Sent: Thursday, October 03, 2002 11:35 AM
Subject: RE: strange "Cannot execute binary file" error message


> very intresting, If I imbed a control character in an echo statement,
> bash WILL NOT run the echo statement.
>
> I had to put the characters in a file, then cat the file instead of
> echoing the characters.....
>
> ahhhhh....That was a strange one
>
> George

hardly
"man bash"

echo -en "\033L2"

echo will also echo an embedded real control character just fine if you
really wanted to do it that way for some reason. the only reason not to do
it that way is simply because it makes it more likely that you or someone
else will come along later and fail to notice the special nature of that
character while editing a script in vi or something and screw up the
script. but to prove the point, you could type the following line:
e c h o space quote ctrl-v esc L 2 quote

also, generally, "^]" is not another way to say "esc", it's "^[".
"^]" is the "escape" hot key in the stock telnet client on most unixes,
which is completely un-related, and not to be confused either with the
ansi/vt/emca "command sequence initiator" or CSI which is "esc [" which is
often rendered in termcap/terminfo files as "^[[" or "\E[" or rarely
"\033["


> -----Original Message-----
> From: George Gallen [mailto:ggallen slackinc com]
> Sent: Thursday, October 03, 2002 11:17 AM
> To: 'enigma-list redhat com'
> Subject: RE: strange "Cannot execute binary file" error message
>
>
> Doesn an ESC character need to be escaped (ie. \)
>
> The first echo, even though it looks like "2" is really
>
> "^]L2" (esc L 2)
>
> do I need to change that to be:
>
> "\^]L2"?
>
> This works fine on our Tru64 system, so I didn't think it needed to be
> changed for bash.
>
> George
>
> -----Original Message-----
> From: George Gallen [mailto:ggallen slackinc com]
> Sent: Thursday, October 03, 2002 10:57 AM
> To: 'enigma-list redhat com'
> Subject: strange "Cannot execute binary file" error message
>
>
>
> the "{tof}" within this message is actually a x0c Control V, Control L
> The usage being: echo "testing" | ./driver.PR22
>
> (echo -n "2" ; cat - | /usr/mbin/lf2crlf  ; echo -n "{tof}") | lp -d
PR32
>
> gives the following error:
> SH: ./driver.PR22: cannot execute binary file
>
> and the file's permissions:
> -rwxr-xr-x   1 root     daemon        73 Dec 12  2000 driver.PR22
>
> BUT.....
>
> (cat - | /usr/mbin/lf2crlf  ; echo -n "{tof}") | lp -d PR32
> works fine
>
> and it's permissions:
> -rwxr-xr-x   1 root     daemon        57 Dec  5  2000 driver.PR32
>
>
> any  idea of what is happening? why it won't execute the script?
>
> George
>
>