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Full Discussion: Large Variable content size caveats?
Top Forums Shell Programming and Scripting Large Variable content size caveats? Post 303032081 by stomp on Monday 11th of March 2019 04:35:29 AM
Old 03-11-2019
Hi Neo,

basically it boils down to jq. Without it I never would have considered doing this task with bash. All JSON-Handling is done with jq. Bash is the code around it.

Even I may have considered differently after having it done, because the task got a little more complex than expected, I think I got the task done very quickly. It's working more than sufficiently well, the code is maintainable and the speed is acceptable. For smaller tasks I consider this still as an excellent choice.

Example: Get an ipaddress from zone data

Assuming this zone data...

JSON-Zonedata from PowerDNS-API . GitHub

...this would be the command to extract the pure ip address of the A-Record "ftp.bla.com":

Code:
jq -r '.rrsets[] | select(.name=="ftp.bla.com." and .type=="A") | .records[0].content '  <<<"$json"

#output

1.2.3.5

Last edited by stomp; 03-11-2019 at 06:16 AM..
 

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LEARN ABOUT DEBIAN

wdel

wdel(1) 						    Internet Applications - FTP 						   wdel(1)

NAME

       wdel - A wget-like program for deleting files on ftp servers

SYNOPSIS

       wdel [option]... [URL [file]...]...

DESCRIPTION

       Wdel is a free utility that is able to delete files on an ftp server.

       Wdel is non-interactive and background-capable. It can delete files or whole directories and is meant to be a robust client even for unsta-
       ble connections and will therefore retry to delete a file, if the connection broke.

       Wdel supports connections through proxies, allowing you to use it in an environment that can access the internet only via  a  proxy  or	to
       provide	anonymity  by  hiding  your  ip-address to the server.	For SOCKSv5-proxies Wdel supports also listening mode, allowing you to use
       port-mode ftp through a proxy (useful if the remote ftp is behind a firewall or a gateway).

URL-Input-Handling
       URLs are recognized by the ftp://-prefix.

       Wdel first reads the URLs from the command line, and associates every file with the last URL until a new URL is found (note  that  this	is
       different  from	wput).	Then, it reads the --input-file (if any) and parses the URLs in the same way.  So you can specify e.g. one URL and
       read all filenames from a file.

       If there are no explicit filenames given for a singe URL, then the last part of the URL is taken to be the file/directory to be deleted. If
       there are filenames, then the last part of the URL is considered to be the directory where these files reside in. Slashes at the end of the
       URL or the filename (in case it is a directory to be deleted) are ignored.

OPTIONS

       There are no special options introduced by Wdel. All of Wput's options may be supplied, although some will not be  of  any  effect  because
       they do not apply for the process of deleting files. Please see wput(1) for a description of the options.

SEE ALSO

       Many options can be set in a wputrc file. For its documentation consult the sample file provided by Wput.

       wput(1) describes all setable options. Not all apply for wdel too though.

AUTHOR

       Wdel is written by Hagen Fritsch <fritsch+wdel-man@in.tum.de> and Jan Larres <jan@majutsushi.net>

Hagen Fritsch, Jan Larres					       0.6.2								   wdel(1)
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