If you output the links in the same directory you will go into an infinite loop that will fill your hard drive.įind * -exec cat \ | grep http | grep -shoP 'http.*?' >. This one is a lot more powerful it will search all files under this directory for links and output it to a file one directory level about this level. grep significa Globally Search For Regular Expression and Print out ( Búsqueda global de expresiones regulares ). With the above you will still get a trailing quote in the end most of the time, this you can easily delete using your favorite text editor by simply replacing all instances of a quote with nothing. The second grep uses perl grep syntax to enable non-greedy grepping and thus allow you to get multiple URLs in one line of HTML and allows you to get the closest extraction. cat filename | grep http | grep -shoP 'http.*?' > outfilename It will often be called something like ~/.zshrc or ~/.bashrc.I find my self needing to extract URLs from text files quite a lot and this is the easiest one liner linux command line magic that I got to extract urls from text files. If you have a long terminal command that will be used often, you can create a reusable shell script function.įirst, find your shell configuration file. To save the output in a file, you can use the > sign at the end: lynx -listonly \ If every line contains a URL, you can then sort them and filter for unique URLs like this: lynx -listonly \ Not having line numbers there can make it easier to process the links with other scripts.įor example, you can use the pipe character ( |) to send the output of Lynx into the grep command in order to print out only the lines that contain URLs: lynx -listonly \ Here's what the output looks like without line numbers: ( Note: the backslashes there allow the command to be split up onto multiple lines.) I guess you could also give -i to the 2nd grep to capture upper case HREF attributes, OTOH, I'd prefer to ignore such broken HTML. The -i option to the first grep command is to ensure that it will work on both and elements. Here's an example command that combines all of those flags: lynx -listonly \ This code will print all top-level URLs that occur as the href attribute of any elements in each line.The option -display_charset=utf-8 will get rid of weird characters in the output, if you run into problems with that.51K Announcement: We just launched Online Number Tools a collection of browser-based number-crunching utilities. Just paste your text in the form below, press Get Line Range button, and you get a line interval. The option -nonumbers will print out the links without line numbers. Worlds simplest line extractor for web developers and programmers.The option -listonly will print out only the list of links.There's a cleaner way to extract links with Lynx. Here's a screenshot of the output for the Hacker News homepage as an example:Įxtracting a List of Links from a Web Page If you try it on a different URL with more links on the page, the list will be longer. only has one link on the page, so there was only one URL in the list. Notice the list of links at the bottom of the output. Use this domain in literature without prior coordination or asking for This domain is for use in illustrative examples in documents. Here's an example: lynx -dump Īnd here's the output of the command: Example Domain The part should be replaced with an actual URL. Here is the basic command to dump the text content and links from a Web page: lynx -dump If you're using a package manager like Scoop or Chocolatey, search for the lynx package. Lynx can be installed in WSL in the same was as for Ubuntu. If you're using Mac, you can install Lynx with Homebrew. On Ubuntu, you can use the apt-get command: sudo apt-get updateįor other Linux distros, use the disto's package manager to install the lynx package. If it isn't already installed, it's easy to install on Linux, Mac, and Windows. See and the online help for more information. The University of Kansas, CERN, and other contributors.ĭistributed under the GNU General Public License (Version 2). If it's installed, you should see output that is similar to this: Lynx Version 2.8.9rel.1 ()Ĭopyrights held by the Lynx Developers Group, To check if it's already installed, open a terminal and type this command: lynx -version
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