unixStartScript.txt

#!/bin/sh

#
#
##############################################################################

# Attempt to set APP_HOME

# Resolve links: \$0 may be a link
app_path=\$0

# Need this for daisy-chained symlinks.
while
    APP_HOME=\${app_path%"\${app_path##*/}"}  # leaves a trailing /; empty if no leading path
    [ -h "\$app_path" ]
do
    ls=\$( ls -ld "\$app_path" )
    link=\${ls#*' -> '}
    case \$link in             #(
      /*)   app_path=\$link ;; #(
      *)    app_path=\$APP_HOME\$link ;;
    esac
done

APP_HOME=\$( cd "\${APP_HOME:-./}${appHomeRelativePath}" && pwd -P ) || exit

APP_NAME="${applicationName}"
APP_BASE_NAME=\${0##*/}

# Add default JVM options here. You can also use JAVA_OPTS and ${optsEnvironmentVar} to pass JVM options to this script.
DEFAULT_JVM_OPTS=${defaultJvmOpts}

# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD=maximum

warn () {
    echo "\$*"
} >&2

die () {
    echo
    echo "\$*"
    echo
    exit 1
} >&2

# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "\$( uname )" in                #(
  CYGWIN* )         cygwin=true  ;; #(
  Darwin* )         darwin=true  ;; #(
  MSYS* | MINGW* )  msys=true    ;; #(
  NONSTOP* )        nonstop=true ;;
esac

CLASSPATH=$classpath
<% if ( mainClassName.startsWith('--module ') ) { %>
MODULE_PATH=$modulePath
<% } %>

# Determine the Java command to use to start the JVM.
if [ -n "\$JAVA_HOME" ] ; then
    if [ -x "\$JAVA_HOME/jre/sh/java" ] ; then
        # IBM's JDK on AIX uses strange locations for the executables
        JAVACMD=\$JAVA_HOME/jre/sh/java
    else
        JAVACMD=\$JAVA_HOME/bin/java
    fi
    if [ ! -x "\$JAVACMD" ] ; then
        die "ERROR: JAVA_HOME is set to an invalid directory: \$JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
    fi
else
    JAVACMD=java
    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi

# Increase the maximum file descriptors if we can.
if ! "\$cygwin" && ! "\$darwin" && ! "\$nonstop" ; then
    case \$MAX_FD in #(
      max*)
        MAX_FD=\$( ulimit -H -n ) ||
            warn "Could not query maximum file descriptor limit"
    esac
    case \$MAX_FD in  #(
      '' | soft) :;; #(
      *)
        ulimit -n "\$MAX_FD" ||
            warn "Could not set maximum file descriptor limit to \$MAX_FD"
    esac
fi

# Collect all arguments for the java command, stacking in reverse order:
#   * args from the command line
#   * the main class name
#   * -classpath
#   * -D...appname settings
#   * --module-path (only if needed)
#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and ${optsEnvironmentVar} environment variables.

# For Cygwin or MSYS, switch paths to Windows format before running java
if "\$cygwin" || "\$msys" ; then
    APP_HOME=\$( cygpath --path --mixed "\$APP_HOME" )
    CLASSPATH=\$( cygpath --path --mixed "\$CLASSPATH" )
<% if ( mainClassName.startsWith('--module ') ) { %>    MODULE_PATH=\$( cygpath --path --mixed "\$MODULE_PATH" )<% } %>
    JAVACMD=\$( cygpath --unix "\$JAVACMD" )

    # Now convert the arguments - kludge to limit ourselves to /bin/sh
    for arg do
        if
            case \$arg in                                #(
              -*)   false ;;                            # don't mess with options #(
              /?*)  t=\${arg#/} t=/\${t%%/*}              # looks like a POSIX filepath
                    [ -e "\$t" ] ;;                      #(
              *)    false ;;
            esac
        then
            arg=\$( cygpath --path --ignore --mixed "\$arg" )
        fi
        # Roll the args list around exactly as many times as the number of
        # args, so each arg winds up back in the position where it started, but
        # possibly modified.
        #
        # NB: a `for` loop captures its iteration list before it begins, so
        # changing the positional parameters here affects neither the number of
        # iterations, nor the values presented in `arg`.
        shift                   # remove old arg
        set -- "\$@" "\$arg"      # push replacement arg
    done
fi

# Collect all arguments for the java command;
#   * \$DEFAULT_JVM_OPTS, \$JAVA_OPTS, and \$${optsEnvironmentVar} can contain fragments of
#     shell script including quotes and variable substitutions, so put them in
#     double quotes to make sure that they get re-expanded; and
#   * put everything else in single quotes, so that it's not re-expanded.

set -- \\
<% if ( appNameSystemProperty ) {
     %>        "-D${appNameSystemProperty}=\$APP_BASE_NAME" \\
<% } %>        -classpath "\$CLASSPATH" \\
<% if ( mainClassName.startsWith('--module ') ) {
     %>        --module-path "\$MODULE_PATH" \\
<% } %>        ${mainClassName} \\
        "\$@"

# Use "xargs" to parse quoted args.
#
# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
#
# In Bash we could simply go:
#
#   readarray ARGS < <( xargs -n1 <<<"\$var" ) &&
#   set -- "\${ARGS[@]}" "\$@"
#
# but POSIX shell has neither arrays nor command substitution, so instead we
# post-process each arg (as a line of input to sed) to backslash-escape any
# character that might be a shell metacharacter, then use eval to reverse
# that process (while maintaining the separation between arguments), and wrap
# the whole thing up as a single "set" statement.
#
# This will of course break if any of these variables contains a newline or
# an unmatched quote.
#

eval "set -- \$(
        printf '%s\\n' "\$DEFAULT_JVM_OPTS \$JAVA_OPTS \$${optsEnvironmentVar}" |
        xargs -n1 |
        sed ' s~[^-[:alnum:]+,./:=@_]~\\\\&~g; ' |
        tr '\\n' ' '
    )" '"\$@"'

exec "\$JAVACMD" "\$@"