How to Run a shell script from Perl script in Parent shell? - Shell Programming and Scripting

hifake · #1 (**permalink**) 08-13-2007

Hi Perl/UNIX experts,

I have a problem in running a shell script from my perl script (auto.pl).

I run the perl script using
perl auto.pl
from the shell prompt

The shell script picks the files in "input" folder and procesess it.

The shell script blue.sh has this code.

Code:

export JAVA_HOME=/opt/j2sdk1.4.2_02
export PATH=${JAVA_HOME}/bin:${PATH}
export MANPATH=${JAVA_HOME}/man:${MANPATH}
export RUNPATH=:.:/export/home/lib/activation.jar:/export/home/lib/commons-dbcp-1.1.jar:/export/home/lib/jdbc2_0-stdext.jar:/export/home/lib/libmqjbnd05.so:/export/home/lib/postcard.jar
export RUNPATH=$RUNPATH:/export/home/lib/ant.jar:/export/home/lib/commons-logging-api.jar:/export/home/lib/jms.jar:/export/home/lib/log4j-1.2.8.jar:/export/home/lib/providerutil.jar
export 
java -classpath $RUNPATH placeOrders ./input/

I tried to run this in perl script using
exec("blue.sh")
exec("./blue.sh")
`./blue.sh`
`sh blue.sh`

I get this error - ./blue: JAVA_HOME=/opt/j2sdk1.4.2_02: is not an identifier

But if i run it manually from the shell

Code:

./blue.sh

the script runs fine.

I guess the problem is because perl spawns a new shell.

porter · #2 (**permalink**) 08-13-2007

Have you tried putting

Code:

#!/bin/sh

at the start of the script?

hifake · #3 (**permalink**) 08-13-2007

Quote:

Originally Posted by porter

Have you tried putting

Code:

#!/bin/sh

at the start of the script?

Yes. I did that. Still i get the same error.
Moreover, I can't run the shell script manually also.

$ ./blue.sh
./blue.sh: JAVA_HOME=/opt/j2sdk1.4.2_02: is not an identifier

$ sh blue.sh
blue.sh: JAVA_HOME=/opt/j2sdk1.4.2_02: is not an identifier

porter · #4 (**permalink**) 08-13-2007

It does not like your exports.

Try

Code:

VARIABLE=value
export VARIABLE

kahuna · #5 (**permalink**) 08-13-2007

Try ksh instead of sh

Code:

#!/bin/ksh

hifake · #6 (**permalink**) 08-14-2007

Quote:

Originally Posted by kahuna

Try ksh instead of sh

Code:

#!/bin/ksh

Tried this...It does nto help. Still same error.

Any other option? Even if you are more than 50% sure please reply. It doesn't hurt trying.

porter · #7 (**permalink**) 08-14-2007

Quote:

Originally Posted by hifake

But if i run it manually from the shell

Code:

./blue.sh

the script runs fine.

What shell are you running normally?

What is it's complete path?

Try using that in the "#!....." first line.

Then switch to sh, by typing "sh", and then try and run the script.

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