A Bash DIY data extraction tool
Putting It All Together
You now have the data you need to do your desired analysis. To save typing each command individually, you can put the above commands into a single Bash script as shown in Listing 5.
Listing 5
Complete Bash Script
01 #!/bin/bash 02 # download the websites specified in addresses.txt one by one 03 wget -cv --progress=bar --connect-timeout=30 --force-directories --ignore-length -r -l 7 --convert-links --waitretry=61 -R gif,jpg,png,svg,pdf $(<addresses.txt) 04 # recursively look for the word "abandon" and its variations and print in verbose mode the line before and after the keyword so we can take a quick look at the context 05 grep -r -A1 -B1 "abandon" * > results.txt 06 # find every line that starts with the "--" delimiter and replace it with "12345678" using your favorite text editor 07 # list the first line after "12345678" 08 grep -A 1 -F 12345678 results2.txt > 1stline.txt 09 # delete everything after the "<" character 10 sed 's/<.*//' 1stline.txt > 1stlinefiltered.txt 11 # list every line only once, without its duplicates 12 sort 1stlinefiltered.txt | uniq -u > address_filtered.txt 13 # remove last character form each line (.html-) 14 sed 's/.$//' address_filtered.txt > list_final_address.txt 15 # create a CSV file containing the web addresses 16 cat list_final_address.txt > address.csv 17 # replace "12345678" with "--" in address.csv because "--" might appear in the URL
Then add the addresses to addresses.txt
, each on one line, and save the file in the same folder as the Bash script in Listing 5. Make the script executable with
chmod +x scriptname.sh
Then launch it with ./scriptname.sh
.
With a few simple Bash commands, you have a DIY text data collection tool that delivers a CSV file for use in your favorite statistical application.
« Previous 1 2 3
Buy this article as PDF
(incl. VAT)
Buy Linux Magazine
Direct Download
Read full article as PDF:
Price $2.95
Subscribe to our Linux Newsletters
Find Linux and Open Source Jobs
Subscribe to our ADMIN Newsletters
News
-
KDE Plasma 6 Looks to Bring Basic HDR Support
The KWin piece of KDE Plasma now has HDR support and color management geared for the 6.0 release.
-
Bodhi Linux 7.0 Beta Ready for Testing
The latest iteration of the Bohdi Linux distribution is now available for those who want to experience what's in store and for testing purposes.
-
Changes Coming to Ubuntu PPA Usage
The way you manage Personal Package Archives will be changing with the release of Ubuntu 23.10.
-
AlmaLinux 9.2 Now Available for Download
AlmaLinux has been released and provides a free alternative to upstream Red Hat Enterprise Linux.
-
An Immutable Version of Fedora Is Under Consideration
For anyone who's a fan of using immutable versions of Linux, the Fedora team is currently considering adding a new spin called Fedora Onyx.
-
New Release of Br OS Includes ChatGPT Integration
Br OS 23.04 is now available and is geared specifically toward web content creation.
-
Command-Line Only Peropesis 2.1 Available Now
The latest iteration of Peropesis has been released with plenty of updates and introduces new software development tools.
-
TUXEDO Computers Announces InfinityBook Pro 14
With the new generation of their popular InfinityBook Pro 14, TUXEDO upgrades its ultra-mobile, powerful business laptop with some impressive specs.
-
Linux Kernel 6.3 Release Includes Interesting Features
Although it's not a Long Term Release candidate, Linux 6.3 includes features that will benefit end users.
-
Arch-Based blendOS Features Cool Trick
If you're looking for a Linux distribution that blends Linux, Android, and web apps together, blendOS might be what you're looking for.