topic Re: Script help me(about EOF) in Operating System - HP-UX

Script help me(about EOF)

Kyuyong-Kwon — Wed, 02 Dec 2009 06:40:17 GMT

Dear all
I have a question for script.
my shell is csh and os is hp-ux 11.23
i have a sript file as like:
#!/usr/bin/csh
CELLtalk -n YT5_MBX << 'EOF'
du *
'EOF'

how to run on to command-line?
For example)
$>CELLtalk -n YT5_MBX << 'EOF' \n du * \n 'EOF'
right my syntex?
But i could not get any results.

Please let me know...
have a good time.

Re: Script help me(about EOF)

Dennis Handly — Wed, 02 Dec 2009 06:53:18 GMT

>my shell is csh

You should give up on the scummy C shell and switch to a real shell: ksh or sh

CELLtalk -n YT5_MBX << 'EOF'
du *
'EOF'

This looks like a here document. What are you intending to do with "du *"? Those single quotes don't look correct, try:
CELLtalk -n YT5_MBX <du *
EOF

Re: Script help me(about EOF)

Kyuyong-Kwon — Wed, 02 Dec 2009 07:16:44 GMT

thank you for your fast reply.
Thats right.
I perceive that I have used single quotes.
Dose not run on to command line in Cshell?

Re: Script help me(about EOF)

Tor-Arne Nostdal — Wed, 02 Dec 2009 08:55:33 GMT

Since you got the solution from Dennis perhaps you should assign him his points ;)
http://forums13.itrc.hp.com/service/forums/helptips.do?#33

Re: Script help me(about EOF)

Dennis Handly — Wed, 02 Dec 2009 09:00:08 GMT

>I perceive that I have used single quotes.

Do you know why you used quotes?

>Does not run on to command line in cshell?

No, you must have here documents on following lines.

Re: Script help me(about EOF)

Kyu-Yong Kwon — Wed, 02 Dec 2009 09:21:24 GMT

Dear Dennis
>Do you know why you used quotes?
i've found it on the website.

>No, you must have here documents on following lines.

where is following lilnes?

Re: Script help me(about EOF)

Peter Nikitka — Wed, 02 Dec 2009 11:44:55 GMT

Hi,

even in csh the command in your script is not different to that in interactive mode:
nik@hpx6[200] csh
hpx6% cat >/tmp/xx <a
b
EOF
hpx6% cat /tmp/xx
a
b
hpx6%

The tcsh used a secondary prompt '?' as default:
cat >/tmp/xx <? a
? b
? EOF

mfG Peter

Re: Script help me(about EOF)

James R. Ferguson — Wed, 02 Dec 2009 19:37:11 GMT

Hi:

> >Dennis: No, you must have here documents on following lines.

where is following lilnes?

What is meant is that the body (lines) of the "here-document" must be written on lines that are separate from the '<<[-]word' line.

You could type these three lines:

# cat <<'EOF'
> today is $(date)
> EOF
today is $(date)
#

...As you know, when you type "EOF" and hit the keyboard ENTER or RETURN key, the string "today is..." is returned.

If you want command-substitution too, don't quote the here-document end-marker (the 'EOF') like this:

# cat <> today is $(date)
> EOF
today is Wed Dec 2 14:29:08 EST 2009
#

...Now, if you want to edit the document without retyping, recall it (esc+K) in a Korn or Posix shell and use the 'vi' editor to change it:

# cat <today is Wed Dec 2 14:29:38 EST 2009...a good day
#

The "^J" sequences represent newline sequences generated by pressing the return/enter key or by pressing the Control-key, a lowercase "v", and then a lowercase "j".

Regards!

...JRF...

Re: Script help me(about EOF)

Dennis Handly — Thu, 03 Dec 2009 09:30:09 GMT

>I've found it on the website.

It appears it works similarly to a real shell except you don't quote the "word" at the end of the document.

>JRF: If you want command-substitution too, don't quote the here-document end-marker

It may be easier to use "\" to quote it.

Re: Script help me(about EOF)

Fredrik.eriksson — Thu, 03 Dec 2009 09:51:24 GMT

You can (atleast if you're using bash) do it like this:
command <<< "what the input should be"

For example:
CELLtalk -n YT5_MBX <<< "`du *`"

I'm not sure if this will work in CSH thou.

Best regards
Fredrik Eriksson