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Top Forums Shell Programming and Scripting Curl parallel download file list Post 302997866 by tonispa on Sunday 21st of May 2017 12:27:14 PM
Old 05-21-2017
Curl parallel download file list

Hello guys, first post sorry if I did some mess here =)

Using Ubuntu 14.04lts 64bits server version.

I have a list (url.list) with only URLs to download, one per line, that looks like this:
Code:
http://domain.com/teste.php?a=2&b=3&name=1
http://domain.com/teste.php?a=2&b=3&name=2
...
http://domain.com/teste.php?a=2&b=3&name=30000

As you can see, there are many lines in the file (in this case 30000). Because of that I'm using a trick to download many URLs simultaneosly with this:
Code:
cat url.list | xargs -n 1 -P 10 <<MAGIC COMMAND THAT WILL SAVE ME>>

The problem is that I'd like to rename the output file with the same value of the name field, like: 1.html, 2.html, ..., 30000.html ecc, and use curl to limit the size of the file to 50KB. So the curl command should be something like:
Code:
curl -r 0-50000 -L $URL -o $filename.html -a $filename.log

How can I have it done? Smilie

I can parse the output of the pipe with echo $URL | sed -n -e 's/^.*name=//p' but I don't know how use this in the same line grabbing the output of a pipe in 2 variables ($URL and $filename).

I tried this with no success:
Code:
cat url.list | xargs -n 1 -P 10 | filename=$(sed -n -e 's/^.*name=//p') ; curl -r 0-50000 -L $URL -o $filename.html -a $filename.log

Thank you in advance,
tonispa

Last edited by tonispa; 05-21-2017 at 01:58 PM..
 

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SPECTOOL(1)							   User Commands						       SPECTOOL(1)

NAME
spectool - manual page for spectool v1.0.10rpmdev1 SYNOPSIS
spectool [<options>] <specfile> DESCRIPTION
Spectool is a tool to expand and download sources and patches from specfiles. If you experience problems with specific specfiles, try to run rpmbuild --nobuild --nodeps <specfile> on the file which might give a clue why spectool fails on a file (ignore anything about missing sources or patches). The plan is to catch errors like this in spectool itself and warn the user about it in the future. OPTIONS
Operating mode: -l, --lf, --list-files lists the expanded sources/patches (default) -g, --gf, --get-files gets the sources/patches that are listed with a URL -h, --help display this help screen Files on which to operate: -A, --all all files, sources and patches (default) -S, --sources all sources -P, --patches all patches -s, --source x[,y[,...]] specified sources -p, --patch a[,b[,...]] specified patches Miscellaneous: -d, --define 'macro value' defines RPM macro 'macro' to be 'value' -C, --directory dir download into specified directory (default '.') -R, --sourcedir download into rpm's %{_sourcedir} -n, --dryrun, --dry-run don't download anything, just show what would be done -f, --force try to unlink and download if target files exist -D, --debug output debug info, don't clean up when done FILES
/etc/rpmdevtools/curlrc optional curl(1) configuration spectool v1.0.10rpmdev1 June 2014 SPECTOOL(1)
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