topic Re: scripting question in Operating System - HP-UX

scripting question

Asad Malik — Mon, 10 Dec 2001 18:30:57 GMT

I have these lines as part of a script:
svrmgrl >/dev/null <connect internal
shutdown immediate
exit
EOF
echo "shutdown Complete"

The last line does not execute. How EOF is being used. Oracle is being shutdown.
Thanks for help

Re: scripting question

Helen French — Mon, 10 Dec 2001 18:35:22 GMT

hey,

put echo "shutdown complete" before exit command. EOF stands for the End Of File

HTH,
Shiju

Re: scripting question

Sanjay_6 — Mon, 10 Dec 2001 18:40:20 GMT

Hi Asad,

try this,

svrmgrl >/dev/null <connect internal
shutdown immediate
exit
echo "shutdown Complete"
EOF

Hope this helps.

Regds

Re: scripting question

Mark Greene_1 — Mon, 10 Dec 2001 18:41:56 GMT

The EOF is the marker for the shell. The << tells the shell to use the following lines until the marker is reached as input for the command "srvmgrl", so the EOF marks where that input ends. It does not do anything nor will it display anything.

The other item you may want to check is that the output is being routed to /dev/null. You may want to send it to a file instead. Also, if this is being run from cron, any errors this process generates will be routed to e-mail, so you may want to consider logging standard error to a file as well.

--
mark

Re: scripting question

A. Clay Stephenson — Mon, 10 Dec 2001 18:50:06 GMT

Hi Asad:

Actually, it should work. The shell should process everything up to the 'EOF' as standard input for you svrmgrl command. The exit should thus refer to svrmgrl rather than an exit statement for the shell. This should have worked and your echo should have worked as expected. By the way, there is nothing special about 'EOF' you could have used 'end_of_commands', '!EOF!', or 'I_am_finished' as long as you specify it EXACTLY the same in both plasces. The most common mistake is to place whitespace before your markers in one place but not the other.
' EOF' is not the same as 'EOF'.

Regards, Clay

Re: scripting question

Asad Malik — Mon, 10 Dec 2001 19:11:17 GMT

HI
I used Sanjay's and Shiju's case and created this
echo start <echo one
echo two
echo three
EOF
echo go

I get output as
start
go

echo one
echo two
are not executed.

Clay
That is what i think that the final echo command should have worked. where is the mistake

Re: scripting question

A. Clay Stephenson — Mon, 10 Dec 2001 19:19:30 GMT

Hi again:

echo start <echo one
echo two
echo three
EOF
echo go

I would only expect you to see 'start' and 'go' in this case. Your 'here docs' is say use everything up to EOF as stdin for the command echo start. But since, echo ignores stdin only the ARGUMENT start is processed. The shell returns after the EOF and you execute the echo go. This is working just as you would expect. Again, there is nothing wrong with your svrmgrl script unless you are missing whitespace that does not post very well. Look for leading spaces or tabs - that will clobber you 'here docs' everytime.

Re: scripting question

Asad Malik — Tue, 11 Dec 2001 14:17:00 GMT

Hi
Clay, there was an additional tab at the end of EOF.
Issue is resolved now. Thanks for help Guys