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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 LINUX

tasksel

TASKSEL(8)						      Debian specific manpage							TASKSEL(8)

NAME

       tasksel - a user interface for installing tasks

SYNOPSIS

       tasksel install <task>

       tasksel remove <task>

       tasksel [options]

DESCRIPTION

       tasksel shows all available tasks and allows to user to select ones to install

OPTIONS

       -t, --test
	   test mode; don't actually install or remove packeges

       --new-install
	   automatically select some tasks without even displaying them to the user; default other tasks to on; used during new Debian installs.

       --list-tasks
	   list on stdout the tasks that would be displayed in the tasksel interface

       --task-packages task
	   lists on stdout the packages that are available and part of the given task

	   Note that this option may be given more than once.

       --task-desc task
	   outputs the extended description of the given task

       --debconf-apt-from waypoint
	   Start the debconf-apt-progress bar here.

       --debconf-apt-to waypoint
	   End the debconf-apt-progress bar here.

       --debconf-apt-progress options
	   Pass the specified options to the debconf-apt-progress command that tasksel runs. These will be appended to any --from and --to options
	   constructed by tasksel itself based on --debconf-apt-from and --debconf-apt-to options.

SEE ALSO

       dpkg(8), apt-get(8)

FILES

       /usr/share/tasksel/*.desc and /usr/local/share/tasksel/*.desc are used to define tasks.

AUTHOR

       tasksel was written by Randolph Chung <tausq@debian.org> and Joey Hess <joeyh@debian.org>

HISTORY

       This document first appeared with tasksel-1.0

2.88ubuntu8							    2010-07-16								TASKSEL(8)
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