wget command to save output with user specified name using url input file

Question

I am trying :
1. wget -i url.txt
and
2. wget -O output.ext

How do I join both? Download urls listed in url.txt and save them with the names I specify, as seperate files.

Answer 1

Define all the URLs in url.txt and give this a try to see if this is what you need:

for url in $(cat url.txt); do wget $url -O $url.out ; done

If your URLs consist of one or more URIs, this would replace slash with underscore:

for url in $(cat url.txt); do wget $url -O $(echo $url | sed "s/\//_/g").out ; done

Answer 2

In this situation, i think, you need two files with the same number of lines, to map each url with a corresponding name:

url.txt (source file containing your urls, example content given here):

https://svn.apache.org/repos/asf/click/trunk/examples/click-spring-cayenne/README.txt
https://svn.apache.org/repos/asf/click/trunk/examples/click-spring-cayenne/README.txt

output_names.txt (filenames you want to assign):

readme1.txt
readme2.txt

Then you iterate over both files and pass the contents to wget , eg with the following script :

#!/bin/bash
IFS=$'\n' read -d '' -r -a url < "$1"
IFS=$'\n' read -d '' -r -a output < "$2"
len=${#url[@]}
for ((i=0;i<$len;i++))
do
  wget "${url[$i]}" -O "${output[$i]}"
done

Call:

./script url.txt output_names.txt