How to recursively download specific subfolders under different folders? - wget

I need help to download a large dataset archived under a number of subfolders, which are organized under different years and days. I could not find an answer online.
The dataset is hosted at a FTP site, with the following folder structure:
root/Year/Month/Day/dataX/
root/Year/Month/Day/dataY/
root/Year/Month/Day/dataZ/
I only need to download the files under dataX/ for all years under root/, and save it locally using the same folder structure.
How can I achieve this in wget? I tried different ways but didnot succeed.
edit:
I tried
wget -r -nH -np -I="dataX" -A *.hdf --user="USER" --password="PASS" ftp://someaddress/root/ -P mydata/

here is the answer I figured out myself
wget -r -np -nH --user USER --password PASS --accept "unique_filename_under_dataX" ftp://host_address/root/

Related

Follow only certain links with Wget but download every host from those links

So, let's say I want to mirror a site with Wget. I want wget to follow and download all the links from http://www.example.com/example/ or http://example.example.com/. How can I do this? I tried this command but it doesn't seem to be working the way I want it to work.
wget -r --mirror -I '/example' -H -D'example.example.com' 'https://www.example.com/'
You want to start with 'https://www.example.com/', want to save files from 'http://www.example.com/example/' and 'http://example.example.com/` ?
Then leave away -H. -I is ambiguous here - does it apply to both domains or just the first ? And btw, -r is included in --mirror.
Check out --accept-regex and --reject-regex for a finer-grained control, e.g. --accept-regex="(www.example.com/example/|example.example.com/)".

How do I wget a page from archive.org without the directory?

I'm trying to download a webpage from archive.org (ie http://wayback.archive.org/web/20110410223952id_/http://www.goldalert.com/gold-price-hovers-at-1460-as-ecb-hikes-rates-2/ ) with wget. I want to download it in /00001/index.html. How would I go about doing this?
I tried wget -p -k http://wayback.archive.org/web/20110410223952id_/http://www.goldalert.com/gold-price-hovers-at-1460-as-ecb-hikes-rates-2/ -O 00001/index.html but that didn't work. I than cd into the directory and removed the 00001 from the O flag. It didn't work either. I than just removed the -O flag. It worked but I get the whole archive.org directory (ie wayback.archive.org new directory web new diretory etc...) and the filename's not changed :(
What do I do?
Sorry for the obviously noob question.
wget http://wayback.archive.org/web/20110410223952id_/http://www.goldalert.com/gold-price-hovers-at-1460-as-ecb-hikes-rates-2/ -O 00001/index.html
Solve my own question. So simple.

how to use wget on a site with many folders and subfolders

I try to download this site, with this code:
wget -r -l1 -H -t1 -nd -N -np -A.mp3 -erobots=off tenshi.spb.ru/anime-ost/
But I only get the index and enter inside the first folder, not the subfolder, help me?
I use this command to download sites including their subfolders:
wget --mirror -p --convert-links -P . [site address]
A little explanation:
--mirror is a shortcut for -N -r -l inf --no-remove-listing.
--convert-links makes links in downloaded HTML or CSS point to local files
-p allows you to get all images, etc. needed to display HTML pages
-P specifies the next argument is the directory the files will be saved to
I found the command at:
http://www.thegeekstuff.com/2009/09/the-ultimate-wget-download-guide-with-15-awesome-examples/
You use -l 1 also known as --level=1 which limits recursion to one level. Set that to a higher level to download more pages. BTW, I like long options like --level because its easier to see what you are doing without going back to man pages.

Why does wget only download the index.html for some websites?

I'm trying to use wget command:
wget -p http://www.example.com
to fetch all the files on the main page. For some websites it works but in most of the cases, it only download the index.html. I've tried the wget -r command but it doesn't work. Any one knows how to fetch all the files on a page, or just give me a list of files and corresponding urls on the page?
Wget is also able to download an entire website. But because this can put a heavy load upon the server, wget will obey the robots.txt file.
wget -r -p http://www.example.com
The -p parameter tells wget to include all files, including images. This will mean that all of the HTML files will look how they should do.
So what if you don't want wget to obey by the robots.txt file? You can simply add -e robots=off to the command like this:
wget -r -p -e robots=off http://www.example.com
As many sites will not let you download the entire site, they will check your browsers identity. To get around this, use -U mozilla as I explained above.
wget -r -p -e robots=off -U mozilla http://www.example.com
A lot of the website owners will not like the fact that you are downloading their entire site. If the server sees that you are downloading a large amount of files, it may automatically add you to it's black list. The way around this is to wait a few seconds after every download. The way to do this using wget is by including --wait=X (where X is the amount of seconds.)
you can also use the parameter: --random-wait to let wget chose a random number of seconds to wait. To include this into the command:
wget --random-wait -r -p -e robots=off -U mozilla http://www.example.com
Firstly, to clarify the question, the aim is to download index.html plus all the requisite parts of that page (images, etc). The -p option is equivalent to --page-requisites.
The reason the page requisites are not always downloaded is that they are often hosted on a different domain from the original page (a CDN, for example). By default, wget refuses to visit other hosts, so you need to enable host spanning with the --span-hosts option.
wget --page-requisites --span-hosts 'http://www.amazon.com/'
If you need to be able to load index.html and have all the page requisites load from the local version, you'll need to add the --convert-links option, so that URLs in img src attributes (for example) are rewritten to relative URLs pointing to the local versions.
Optionally, you might also want to save all the files under a single "host" directory by adding the --no-host-directories option, or save all the files in a single, flat directory by adding the --no-directories option.
Using --no-directories will result in lots of files being downloaded to the current directory, so you probably want to specify a folder name for the output files, using --directory-prefix.
wget --page-requisites --span-hosts --convert-links --no-directories --directory-prefix=output 'http://www.amazon.com/'
The link you have provided is the homepage or /index.html, Therefore it's clear that you are getting only a index.html page. For an actual download, for example, for "test.zip" file, you need to add the exact file name at the end. For example use the following link to download test.zip file:
wget -p domainname.com/test.zip
Download a Full Website Using wget --mirror
Following is the command line which you want to execute when you want to download a full website and made available for local viewing.
wget --mirror -p --convert-links -P ./LOCAL-DIR
http://www.example.com
–mirror: turn on options suitable for mirroring.
-p: download all files that are necessary to properly display a given HTML page.
–convert-links: after the download, convert the links in document
for local viewing.
-P ./LOCAL-DIR: save all the files and directories to the specified directory
Download Only Certain File Types Using wget -r -A
You can use this under following situations:
Download all images from a website,
Download all videos from a website,
Download all PDF files from a website
wget -r -A.pdf http://example.com/test.pdf
Another problem might be that the site you're mirroring uses links without www. So if you specify
wget -p -r http://www.example.com
it won't download any linked (intern) pages because they are from a "different" domain. If this is the case then use
wget -p -r http://example.com
instead (without www).
I had the same problem downloading files of CFSv2 model. I solved it using mixing of the above answers, but adding the parameter --no-check-certificate
wget -nH --cut-dirs=2 -p -e robots=off --random-wait -c -r -l 1 -A "flxf*.grb2" -U Mozilla --no-check-certificate https://nomads.ncdc.noaa.gov/modeldata/cfsv2_forecast_6-hourly_9mon_flxf/2018/201801/20180101/2018010100/
Here a brief explanation of every parameter used, for a further explanation go to the GNU wget 1.2 Manual
-nH equivalent to --no-host-directories: Disable generation of host-prefixed directories. In this case, avoid the generation of the directory ./https://nomads.ncdc.noaa.gov/
--cut-dirs=<number>: Ignore directory components. In this case, avoid the generation of the directories ./modeldata/cfsv2_forecast_6-hourly_9mon_flxf/
-p equivalent to --page-requisites: This option causes Wget to download all the files that are necessary to properly display a given HTML page. This includes such things as inlined images, sounds, and referenced stylesheets.
-e robots=off: avoid download robots.txt file
-random-wait: Causes the time between the request to vary between 0.5 and 1.5 * seconds, where was specified using the --wait option.
-c equivalent to --continue: continue getting a partially-downloaded file.
-r equivalent to --recursive: Turn on recursive retrieving. The default maximum depth is 5
-l <depth> equivalent to --level <depth>: Specify recursion maximum depth level
-A <acclist> equivalent to --accept <acclist>: specify a comma-separated list of the name suffixes or patterns to accept.
-U <agent-string> equivalent to --user-agent=<agent-string>: The HTTP protocol allows the clients to identify themselves using a User-Agent header field. This enables distinguishing the WWW software, usually for statistical purposes or for tracing of protocol violations. Wget normally identifies as ‘Wget/version’, the version being the current version number of Wget.
--no-check-certificate: Don't check the server certificate against the available certificate authorities.
I know that this thread is old, but try what is mentioned by Ritesh with:
--no-cookies
It worked for me!
If you look for index.html in the wget manual you can find an option --default-page=name which is index.html by default. You can change to index.php for example.
--default-page=index.php
If you only get the index.html and that file looks like it only contains binary data (i.e. no readable text, only control characters), then the site is probably sending the data using gzip compression.
You can confirm this by running cat index.html | gunzip to see if it outputs readable HTML.
If this is the case, then wget's recursive feature (-r) won't work. There is a patch for wget to work with gzip compressed data, but it doesn't seem to be in the standard release yet.

updating data from different URL using wget

What's the best way of updating data files from a website that has moved on to a new domain, with changes in their folder structure.
The old URL for example is http://folder.old-domain.com while the new URL is http://new-domain.com/directory1/directory2. My data is stored locally in ~/Data_Backup/folder.old-domain.com folder.
Data was originally downloaded using:
$ wget -S -t 0 -c --mirror –w 2 –k http://folder.old-domain.com
I was thinking of using mv to rename the old folder to follow the new URL pattern, but is there a better way of doing this?
Will this work? I'm not particular with the directory structure. What's important is to update the contents of the target folder (and its sub-folders.)
$ wget -S -t 0 -c -m –w 2 –k -N -np -P ~/Data_Backup/folder.old-domain.com http://new-domain.com/directory/directory
Thanks in advance.
Got it!
I need to add the following options:
-nH --cut-dirs=2
and now it works.