Command Line Download Manager

Version 14 by Tony Johnson
on Jul 18, 2008 09:31.

<< Changes from 13 to 14

compared with

Current by Tony Johnson
on Nov 25, 2008 12:06.

Key

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		h1. Using the command line download manager

		h2. Generate a key file

		You need to generate a key file to authenticate yourself to the server. To do this simply click on this link:

		[Generate Key File\|http://glast-ground.slac.stanford.edu/DataCatalog/keyGen]

		You will need to login with your SLAC username/password if you have not already done so. Save the downloaded key file as ~/.downloadManager/glastKeyFile. Remember to set the permissions on the file/directory so it can only be read by the user who will run the command line download manager.

		h2. Download the [launcher jar file\|^launcher.jar].

		Store it anywhere you like.

		h2. Make sure you have a suitable version of Java installed

		java -version

		You need version 1.5 or greater.

		h2. Run the download manager

		From the directory where you save launcher.jar issue the following command.

		{noformat}
		java -jar launcher.jar --folder=/Data/Flight/Level1/LPA --group=FT1 --destination data/FT1
		{noformat}

		The full list of arguments supported is:

		{noformat}
		-destination,--d <arg> Destination folder
		-folder,--f <arg> Folder to download
		-group,--g <arg> Group to download
		-help,--h Display usage information
		-keyFile,--k <arg> File containing download key
		-nDownloads,--n <arg> Number of simultaneous downloads
		-q,--quiet Turn off informational messages
		-runMax <arg> Maximum run number
		-runMin <arg> Minimum run number
		-x,--debug Turn on debug output
		{noformat}

		Notes:

		* We should add more options, to support MET ranges and full data catalog meta-data search
		* The format of the downloaded files will change shortly to include the data type of the file (FT1, MERIT etc)
		* The download manager checks if the files to be downloaded already exist. If so they will not be downloaded again. If a newer version exists it will replace the existing version (and the existing version will be renamed *-old-n)