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Re: Behaviours of Terminal Versus Script when using "<<"


On 9/15/2010 12:18 PM, delbydev wrote:
Hello
Have hunted all over for this one but it seems no one else has reported the
issue - maybe because they don't use the feature or there is something awry
with my installation

I write scripts that dart in and out of databases

I bind my Oracle connection string into a number of variables in my .profile

ORACLE_HOME='c:\\Oracle\\product\\11.2.0\\dbhome_2' export ORACLE_HOME
mydbconn="${ORACLE_HOME}\\bin\\sqlplus -s mydbuser/mydbpass@mydbhost" export
mydbconn
[snip]
so two questions
1) Does the MS CMD Terminal support<<  in scripts  (presently not in my
installation) - I can't be sure but I think it used to work on older
environment
2) Is minnty a default standard terminal that will ship with all future
builds of cygwin?

The problem here is not in the << construct. That's a function of the bash shell, not the terminal window (cmd, mintty), and works the same way in both.


I'll bet the problem is your $mydbconn variable is not set where you're trying to run your script. Try this test... in your script, put:

echo "mydbconn is set to ${mydbconn}." >> /tmp/myresults.txt

And run it. I'll bet you'll see "mydbconn is set to ." which means it's empty (not set) when using cmd, and is set when using mintty.

The reason is that you put those variable settings in .profile, which is only used in "login" shells; and whether a shell is a "login" shell depends on how it is invoked; which can differ depending on the terminal window you use and how *that* is invoked.

Try placing your mydbconn and ORACLE_HOME variable settings into .bashrc instead of (or in addition to) your .profile; or directly into your script.

-h

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