Download List Of Files Wget Mac

Posted on by

  1. Wget Download File
  2. Download All Files Wget

Apr 17, 2020 The wget command can be used to download files using the Linux and Windows command lines. Wget can download entire websites and accompanying files. Apr 26, 2012 If you’ve ever wanted to download files from many different archive.org items in an automated way, here is one method to do it. Here’s an overview of what we’ll do: 1. Confirm or install a terminal emulator and wget 2. Create a list of archive.org item identifiers 3. Craft a wget command to download files from those identifiers 4. Wget: Download files with filename from list of urls using wget. Ask Question Asked 4 years, 5 months ago. Active 9 months ago. Viewed 2k times 0. I have a file music. I want to download files from that page (or web folder) which have 'john' in a file name. Pictureofjohn.jpg and johnspicture.jpg – larus Oct 10 '09 at 18:49 Hello quick free porn! Shahmir is right in that it's less of a Stack Overflow question and will probably get closed unless changed. When downloading a single file, we can use wget's -O option to specify the file name. When I'm downloading Urls in a file using wget -i filelist.txt (filelist.txt contains list Of Urls I want to Download), how can I construct filelist.txt so that each file is renamed as it is downloaded? For Ex, if the filelist.txt contains the following content.

When you request a downloaded dataset from the Data Portal, there are many ways to work with the results. Sometimes, rather than accessing the data through THREDDS (such as via .ncml or the subset service), you just want to download all of the files to work with on your own machine.

There are several methods you can use to download your delivered files from the server en masse, including:

  • shell – curl or wget
  • python – urllib2
  • java – java.net.URL

Below, we detail how you can use wget or python to do this.

It’s important to note that the email notification you receive from the system will contain two different web links. They look very similar, but the directories they point to differ slightly.

First Link: https://opendap.oceanobservatories.org/thredds/catalog/ooi/sage-marine-rutgers/20171012T172409-CE02SHSM-SBD11-06-METBKA000-telemetered-metbk_a_dcl_instrument/catalog.html

The first link (which includes thredds/catalog/ooi) will point to your dataset on a THREDDS server. THREDDS provides additional capabilities to aggregrate or subset the data files if you use a THREDDS or OpenDAP compatible client, like ncread in Matlab or pydap in Python.

Second Link: https://opendap.oceanobservatories.org/async_results/sage-marine-rutgers/20171012T172409-CE02SHSM-SBD11-06-METBKA000-telemetered-metbk_a_dcl_instrument

The second link points to a traditional Apache web directory. From here, you can download files directly to your machine by simply clicking on them.

List

Using wget

First you need to make sure you have wget installed on your machine. If you are on a mac and have the homebrew package manager installed, in the terminal you can type:

Alternatively, you can grab wget off GitHub here https://github.com/jay/wget

Once wget is installed, you can recursively download an entire directory of data using the following command (make sure you use the second (Apache) web link (URL) provided by the system when using this command):

This simpler version may also work.

Here is an explanation of the specified flags.

  • -r signifies that wget should recursively download data in any subdirectories it finds.
  • -l1 sets the maximum recursion to 1 level of subfolders.
  • -nd copies all matching files to current directory. If two files have identical names it appends an extension.
  • -nc does not download a file if it already exists.
  • -np prevents files from parent directories from being downloaded.
  • -e robots=off tells wget to ignore the robots.txt file. If this command is left out, the robots.txt file tells wget that it does not like web crawlers and this will prevent wget from working.
  • -A.nc restricts downloading to the specified file types (with .nc suffix in this case)
  • –no-check-certificate disregards the SSL certificate check. This is useful if the SSL certificate is setup incorrectly, but make sure you only do this on servers you trust.

Wget Download File

Using python

wget is rather blunt, and will download all files it finds in a directory, though as we noted you can specify a specific file extension.

If you want to be more granular about which files you download, you can use Python to parse through the data file links it finds and have it download only the files you really want. This is especially useful when your download request results in a lot of large data files, or if the request includes files from many different instruments that you may not need.

Here is an example script that uses the THREDDS service to find all .nc files included in the download request. Under the hood, THREDDS provides a catalog.xml file which we can use to extract the links to the available data files. This xml file is relatively easier to parse than raw html.

The first part of the main() function creates an array of all of the files we would like to download (in this case, only ones ending in .nc), and the second part actually downloads them using urllib.urlretrieve(). If you want to download only files from particular instruments, or within specific date ranges, you can customize the code to filter out just the files you want (e.g. using regex).

Don’t forget to update the server_url and request_url variables before running the code. You may also need to install the required libraries if you don’t already have them on your machine.

Download All Files Wget

— Last revised on May 31, 2018 —