rubin core install location changed handler code, older code witha snippet that allows linux to have disks named rubin or multiple dirs named rubin in the path

snippet.rb

##about this code
## in windows a mounted disks path is a drive letter C:/ E:/ F:/ ect.
## however in linux the path is the name of the disk, if a disk is named "rubin" the launch
## will fail because it expects the name rubin to only be in a path once
##this error will also occur if the install is nested in multiple directories named 'rubin'

## this code is outdated and may not be needed anymore



##check host WORKDIR and make sure its install directory, adjust installation_header if rubin has been moved unexpectedly
if Dir.getwd.to_s.downcase!=INSTALLATION_HEADER[1].to_s.downcase
  boot_log << "Workdir is not install dir: "+INSTALLATION_HEADER[1].to_s 
    ## the entire install directory has been unexpectedly moved 
	if File.file?(Dir.getwd+"/system/rubin.rb")
	## code to deal with two rubins in the string, on linux the path is the system path to storage then the drive name
        new_homedir = Dir.getwd
        path=new_homedir+"/system/rubin.rb"
        data=File.read(path)
        header=data.split("\n")[0]
        header=header.split("=")[-1]
        header = self.instance_eval(header)
        header[1]=new_homedir
        header="INSTALLATION_HEADER="+header.to_s
        ndata=header.to_s+"\n"+data.split("\n")[1..-1].join("\n")
        f=File.open(path,"w"); f.write(ndata);  f.close
        Dir.chdir(new_homedir)
		$homedir=new_homedir
		##now we gotta restart
		if $debug
		puts "System Install dir was recently moved and info had to be updated before startup."
		puts "Restarting in 3 seconds."
		sleep 3.0
		end
		system("start launch.rb")
		sleep 0.2
		exit
	else
	  ##
	  ##do further checks here and elaborate on workdir
	  if $debug;  puts "BOOT CANNOT CONTINUE, INSTALLATION NOT FOUND";  sleep 3.0;  end;  raise "BOOT FAILED"#exit
	end
else;$homedir=Dir.getwd
end