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Full Discussion: Shell script to input as if from command line to the java program
Top Forums Shell Programming and Scripting Shell script to input as if from command line to the java program Post 302676913 by gary_w on Wednesday 25th of July 2012 09:35:08 AM
Old 07-25-2012
Read up on "here-document". Basically:
Code:
java_command_you_want_to_feed_input_to <<EOF
1
EOF

The shell will feed the lines between the "EOF"s (can be any string, the ending string must be at the front of a line) to the command when it expects input.
 

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LEARN ABOUT SUSE

java-functions

java-functions(7)						RPM Java packaging						 java-functions(7)

NAME

       java-functions - Functions library for Java applications. Written for the JPackage Project <http://www.jpackage.org/>:

SYNOPSIS

       set_jvm()
	    Set the java virtual machine. Use a JAVA_HOME if defined, or try to find it from java command

       set_classpath()
	    Set  the  classpath  - this functions requires a valid JAVA_HOME, JAVACMD, and JAVA_LIBDIR. JARs could be specified as an argument, or
	    via ADDITIONAL_JARS variable.

       set_javacmd()
	    set the JAVACMD variable. Options should be passed via JAVACMD_OPTS variable.

       set_flags()
	    set FLAGS variable. They could be specified as an argument, or via ADDITIONAL_FLAGS variable.

       set_options()
	    set OPTIONS variable. They could be specified as an argument, or via ADDITIONAL_OPTIONS variable.

       run()
	    run the application. It executed a following command. If VERBOSE is defined, then it prints the command to stdout.

	    exec $JAVACMD $FLAGS -classpath $CLASSPATH $OPTIONS $MAIN_CLASS "$@"

       set_jvm_dirs()
	    set JVM-related directories (JVM_LIBDIR, JAVA_VERSION, JAVAVER_LIBDIR and JAVAVER_JNIDIR variables). Requires a  correct  JAVA_LIBDIR,
	    JAVA_HOME and JAVA_CMD.

       link_jar_repository()
	    links a jar repository. Options could be found in build-jar-repository(1)

       find_jar()
	    finds a specific extention (jar or directory). Requires a correct JAVA_LIBDIR, JAVAVER_LIBDIR and JVM_LIBDIR. Used by find-jar(1) com-
	    mand.

       do_find_jar()
	    core routine used by find_jar()

       check_java_env()
	    checks java environment - the JAVA_HOME, JAVACMD, JAVA_LIBDIR, JNI_LIBDIR variables.

DESCRIPTION

       This is a library of generic shell functions which should be used on jpackage.org compatible distributions.

FILES

       /use/share/java-utils/java-functions
	    shell script functions library for Java applications

       /etc/java/java.conf
	    system-wide Java configuration file

       ~/.java/java.conf
	    user's Java configuration

SEE ALSO

   Regular Manual Pages
       build-jar-repository(1)
       find-jar(1)
       java.conf(5)
       jpackage-utils(7)

AUTHORS

       Guillaume Rousse <guillomovitch@sourceforge.net>
       Ville Skytta <scop at jpackage.org>
       David Walluck <david@jpackage.org>
       Nicolas Mailhot <Nicolas.Mailhot at laPoste.net>

REPORTING BUGS

       Report bugs using JPackage Bugzilla (http://www.jpackage.org/bugzilla/)

jpackage-utils 1.7.5						   February 2009						 java-functions(7)
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