topic Re: echodo not working. in Operating System - HP-UX

echodo not working.

Colin Summers — Mon, 27 Aug 2001 22:00:46 GMT

I have several scripts that use echodo. 4 some reason they have stopped working and it's the echodo that is failing. I have tested this on the command line and found that all of the commands, ie cat ls -al, mkdir, rmdir, work EXCEPT export.
example:
1.echodo ls -l /tmp - this works
2. echodo mkdir /tmp/colin - this works
3. echodo export COLIN="TEST77" then I echo $COLIN and it's empty.
I can't figure out why. No changes to the O/S. Any ideas would be of great help.
Thank you all in advance.

Re: echodo not working.

linuxfan — Mon, 27 Aug 2001 22:15:19 GMT

Hi Colin,

AFAIK, there is no such command called echodo
you might be using an alias or a wrapper script.
Can you do "type echodo" or "whence echodo" or "which echodo" and see what is echodo

If it is an alias "type echodo" will return
echodo is an alias for .......

-Ramesh

Re: echodo not working.

Colin Summers — Tue, 28 Aug 2001 13:10:19 GMT

Ramesh:
I did all 3 of your commands and they returned the same thing. /p/util/oracle/8.0.6/bin/echodo
Here are the only 2 working lines in the echodo script.

echo $*
$*
This should be echoing the command and then execute it.
Thanx.

Re: echodo not working.

Graham Cameron_1 — Tue, 28 Aug 2001 13:32:40 GMT

echodo is a script supplied as part of the
oracle distribution, so is not standard hp-ux.
All it does is to echo a command and then
execute it, using:
echo $*
$*

Since it is a script, each time it is invoked
it runs in its own subshell, so your
"export COLIN=TEST77" command *does* get
executed, but within its own subshell which then immediately exits.

When you do "echo $COLIN" from the calling
shell, COLIN is therefore undefined.

Therefore echodo is of no use if you are issuing commands which affect the shell environment.

echodo always works this way, nothing has changed on your system. The only way round it is to take out the echodo before the export.
How about
export COLIN="TEST77"
echo $COLIN
in your script.
Hope this helps.
Graham

Re: echodo not working.

linuxfan — Tue, 28 Aug 2001 13:56:50 GMT

Hi Colin,

Graham has already explained to you as to why your variable is not getting set in your shell, I just wanted to add that if you are trying to set a variable just add it to user's .profile in $HOME/.profile

-HTH
Ramesh