Running a command in shell script

Question

I have a shell script file (run.sh) that contains the following:

#!/bin/bash
%JAVA_HOME%/bin/java -jar umar.jar

when i try to run it (./run.sh), it gives me following: umar/bin/run.sh: line 1: fg: no job control

However if I run same command directly on shell, it works perfectly.

What's wrong with the script file?

Thanks

have you put #!/bin/bash as the first line of the script?

jldupont
– jldupont

2009-10-20 01:34:19 +00:00
Commented Oct 20, 2009 at 1:34 — jldupont
– jldupont, Commented Oct 20, 2009 at 1:34

Paul Tomblin · Accepted Answer · 2009-10-20 01:36:35Z

9

%foo% is not how you do command substitution in a bourne/BASH shell script. I assume you're running this from a Windows command line, which is why it works when you run it directly. Try using proper bourne syntax:

${JAVA_HOME}/bin/java -jar umar.jar

answered Oct 20, 2009 at 1:36

Paul Tomblin

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9 Comments

Andrey Vlasovskikh Over a year ago

Don't forget to protect the variable against spaces: "$JAVA_HOME"/bin/java.

craftsman Over a year ago

Thank Paul. I made the changes suggested by you. Atleast now I am not getting the "fg: no job control" message. But now it is giving me this error: "Unable to access jarfile umar.jar" even I have set all permissions true: "chmod 777 umar.jar". Strange fact is that it works perfectly if I run the jar directly from shell.

Paul Tomblin Over a year ago

Is umar.jar in the current directory?

craftsman Over a year ago

yes it is in current directory... This issue is also resolved by giving full path of jar file ... Now strangely I am getting a third type of error: "Exception in thread "main" java.lang.UnsupportedClassVersionError: Bad version number in .class file" I guess I should start a new thread for this.

paxdiablo Over a year ago

Umar, that message is usually because it was compiled with a later version of the JDK than your JRE.

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Shankar R10N · Accepted Answer · 2009-10-20 01:34:59Z

2

Try turning on monitor mode

set -m

answered Oct 20, 2009 at 1:34

Shankar R10N

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Comments

paxdiablo · Accepted Answer · 2009-10-20 02:06:28Z

2

%JAVA_HOME% will substitute a Windows environment variable and is appropriate in a .bat file.

Try the following shell script which should work on most UNIX like systems.

#!/bin/bash
$JAVA_HOME/bin/java -jar umar.jar

edited Oct 20, 2009 at 2:06

paxdiablo

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answered Oct 20, 2009 at 1:37

Russ

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