Synology Scheduler .sh java command not found

Question

I have a bash script thats only task is to execute a jar file.

sms.sh

java -jar /volume1/homes/jar/smssender.jar

Using my Synology NAS I set up a task.

Adding the command to execute bash script. Adding log output.

Executing my new Task.

Checking the log to see the following error:

/volume1/homes/jar/sms.sh: line 1: java: command not found

Checking Java version/installation:

Checking execution of sh script manually (working):

Anyone with this same strange case? Any workarounds/ideas?

I tried

• Rebooting my NAS
• Uninstall / install Java8 package

but none worked.

Answer 1

When the Synology task scheduler executes the script sms.sh the PATH setting is taken from script /etc/crontab. Which does not contain the Java path.

The default login shell environment is defined int /etc/profile. At the end there is a section to add the Java path.

PATH=$PATH:/var/packages/Java8/target/j2sdk-image/bin # Synology Java runtime enviroment
PATH=$PATH:/var/packages/Java8/target/j2sdk-image/jre/bin # Synology Java runtime enviroment
JAVA_HOME=/var/packages/Java8/target/j2sdk-image/jre # Synology Java runtime enviroment
CLASSPATH=.:/var/packages/Java8/target/j2sdk-image/jre/lib # Synology Java runtime enviroment
LANG=en_US.utf8 # Synology Java runtime enviroment
export CLASSPATH PATH JAVA_HOME LANG # Synology Java runtime enviroment

As already stated in already given comments sourcing a profile script which is meant for an interactive shell isn't suggested. You might mimic the behavior of the /etc/profile script in your sms.sh script to set CLASSPATH PATH JAVA_HOME LANG.

The raised points about hardcoding the path in your script and the resulting reduced portability might have a lover precedence in this specific case.