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Full Discussion: Check whether a process is alive or not
Top Forums UNIX for Dummies Questions & Answers Check whether a process is alive or not Post 302119798 by appleforme1415 on Thursday 31st of May 2007 11:57:07 PM
Old 06-01-2007
Quote:
Originally Posted by radoulov
You cannot use $! before executing the program in background.
You can use something like this:

Code:
lockfile="/tmp/my_lock"

[ -f "$lockfile" ]&&mypid=$(<"$lockfile")
if ! ps -p $mypid>/dev/null 2>&1;then
        nohup java -cp ${CLASSPATH} Sample >/dev/null 2>&1 &
        echo $! >"$lockfile"
fi


Anyway, I'd use some unique pattern from the command line:

Code:
ps -ef|grep [S]ample||nohup java -cp ...

If such a pattern does not exists, I'd create one:
Code:
ps -ef|grep [f]oo||nohup java -Dfoo=foo -cp ...


Can you please explain what you are trying to do ...i could not able to understand ....various syntax and symbols used....

Response wud be very much appreciated .....
 

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LEARN ABOUT MOJAVE

schemagen

schemagen(1)						      General Commands Manual						      schemagen(1)

NAME

       schemagen - Java(TM) Architecture for XML Binding Schema Generator Specification Version: 2.0
       Reference Implementation (RI) Version: 2.0 ea3

   Launching schemagen
       The schema generator can be launched using the appropriate schemagen shell script in the bin directory for your platform.

       The current schema generator can process either Java source files or class files.

       We also provide an Ant task to run the schema generator - see the instructions for using schemagen with Ant.

	  For Solaris/Linux

		% path/to/jaxb/bin/schemagen.sh Foo.java Bar.java ...
		Note: Writing schema1.xsd

	  For WindowsNT/2000/XP

		> path	ojaxbinschemagen.bat Foo.java Bar.java ...
		Note: Writing schema1.xsd

       If your java sources/classes reference other classes, they must be accessable on your system CLASSPATH environment variable, or they need
       to be given to the tool by using the -classpath/-cp options. Otherwise you will see errors when generating your schema.

	  Command Line Options

	     Usage: schemagen [-options ...] <java files>

	     Options:
		 -d <path>	   :  Specify where to place processor and javac generated class files
		 -cp <path>	   :  Specify where to find user specified files
		 -classpath <path> :  Specify where to find user specified files
		 -help		   :  Display this usage message

   Generated Resource Files
       The current schema generator simply creates a schema file for each namespace referenced in your Java classes. There is no way to control
       the name of the generated schema files at this time. For that purpose, use the schema generator ant task.

See Also
	  o JAXB 2.0:

	     * Release Notes @
	       http://java.sun.com/webservices/docs/2.0/jaxb/ReleaseNotes.html

	     * XJC @
	       http://java.sun.com/webservices/docs/2.0/jaxb/xjc.html

	     * XJCTask @
	       http://java.sun.com/webservices/docs/2.0/jaxb/xjcTask.html

	     * SchemaGen @
	       http://java.sun.com/webservices/docs/2.0/jaxb/schemagen.html

	     * schemagenTask @
	       http://java.sun.com/webservices/docs/2.0/jaxb/schemagenTask.html

	     * Sample Apps @
	       http://java.sun.com/webservices/docs/2.0/jaxb/samples.html

	     * Changelog @
	       http://java.sun.com/webservices/docs/2.0/jaxb/changelog2.html

	  o JAXB 1.0.x:

	     * Release Notes @
	       http://java.sun.com/webservices/docs/2.0/jaxb/jaxb-1_0.html

	     * Changelog @
	       http://java.sun.com/webservices/docs/2.0/jaxb/changelog.html

	  o JAXB RI Extensions:

	     * Runtime Properties @
	       http://java.sun.com/webservices/docs/2.0/jaxb/vendorProperties.html

	     * XJC Customizations @
	       http://java.sun.com/webservices/docs/2.0/jaxb/vendorCustomizations.html

	     * Develop Plugins @
	       http://java.sun.com/webservices/docs/2.0/jaxb/developPlugins.html

	  o JAXB RI Schema Languages:

	     * W3C XML Schema @
	       http://java.sun.com/webservices/docs/2.0/jaxb/vendorSchemaLangs.html#xschema

	     * RELAX NG @
	       http://java.sun.com/webservices/docs/2.0/jaxb/vendorSchemaLangs.html#relaxng

	     * DTD @
	       http://java.sun.com/webservices/docs/2.0/jaxb/vendorSchemaLangs.html#dtd

	  o JAXB Community:

	     * Java.net Homepage @
	       http://jaxb.dev.java.net

	     * Developer interest list @
	       https://jaxb.dev.java.net/servlets/ProjectMailingListList

	     * FAQ @
	       https://jaxb.dev.java.net/faq/index.html

								    07 Aug 2006 						      schemagen(1)
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