Shell Programming and Scripting

Thanks Folks.
You are correct. I copied the script from windows and edited in text editor.
I used Emacs and removed all ^M. Now, it is working fine.

Actually, I am trying to set all environment variables in one script (env.sh)
and re-use the variables in appln.sh (calling script).

Does Unix really supports this? If so, how can I achieve this?

appln.sh
--------
#! /bin /sh
sh ./env.sh

# This prints nothing
echo ${MY_VAR}


env.sh
---------
export MY_VAR="/opt/bea"
echo ${MY_VAR}

I'd like to re-use 'MY_VAR' in appln.sh. I don't want to add MY_VAR in /etc/profile.

Any help on this is highly appreciable

Thanks,
Adhil

UNIX really supports this but you're doing it wrong. You're also putting extra spaces and punctuation marks all over the place -- if your script was as you posted it it'd be complaining about syntax errors and files not found.

Code:

#!/bin/sh
# Don't put extra spaces in the #!/bin/sh

# This does nothing, because test2.sh will run in its own separate process
./test2.sh
echo "${MY_VAR}"

# My best guess at what you actually did, which also does nothing for the same reason.
sh ./test2.sh
echo "${MY_VAR}"

# This will run it in the same shell.  Note the dot and the space.
. test2.sh
echo "${MY_VAR}"

Code:

# Some shells demand that the = and the export happen separately.
MY_VAR="/opt/bea"
export MY_VAR

Folks,

I got it fixed by changing appln.sh

from
sh ./env.sh
to
. env.sh

What is the difference between these two?

Thanks,
-Adhil

---------- Post updated at 04:05 PM ---------- Previous update was at 04:00 PM ----------

Thanks a lot, Corona.

Sorry I edited my previous post before reading your reply. Could create confusion to the readers. My apologize.

Thanks,
Adhil

I forgive you. I manage to do that to people with fair regularity