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Full Discussion: Need a Bash script for iterating thru an array and running a command
Top Forums UNIX for Beginners Questions & Answers Need a Bash script for iterating thru an array and running a command Post 303026987 by apmcd47 on Thursday 6th of December 2018 12:32:41 PM
Old 12-06-2018
Off topic, but may be pertinent to @SVRao19056.

As you are using docker, you probably already know that the output of some commands can be formatted with GO Templates:
Code:
docker images --format '{{json .}}'
docker images --format '{{json .Tag}}'

The examples above use the GO template to format in JSON format. I strongly recommend that you install the command line utility jq to use with this output. Not only does it allow for readable formatting of the JSON, but it allows for drilling down into the data more easily than just reading the output. For example, the keywords of the output of docker images:
Code:
docker images --format '{{json .}}' | head -1 | jq '.|keys'

Find the keys in the IPAM component of a network:
Code:
docker network inspect --format '{{json .IPAM}}' cf06ecfeb5f0 | jq '.|keys'

You can only access one component in docker so you have to use jq:

Code:
docker network inspect --format '{{json .IPAM}}' cf06ecfeb5f0 | jq '.Config,.Driver'
docker network inspect --format '{{json .}}' cf06ecfeb5f0 | jq '.IPAM|.Config,.Driver'

and so on.

Andrew
 

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LEARN ABOUT DEBIAN

json_pp

JSON_PP(1)						 Perl Programmers Reference Guide						JSON_PP(1)

NAME

       json_pp - JSON::PP command utility

SYNOPSIS

	   json_pp [-v] [-f from_format] [-t to_format] [-json_opt options_to_json]

DESCRIPTION

       json_pp converts between some input and output formats (one of them is JSON).  This program was copied from json_xs and modified.

       The default input format is json and the default output format is json with pretty option.

OPTIONS

   -f
	   -f from_format

       Reads a data in the given format from STDIN.

       Format types:

       json
	   as JSON

       eval
	   as Perl code

   -t
       Writes a data in the given format to STDOUT.

       null
	   no action.

       json
	   as JSON

       dumper
	   as Data::Dumper

   -json_opt
       options to JSON::PP

       Acceptable options are:

	   ascii latin1 utf8 pretty indent space_before space_after relaxed canonical allow_nonref
	   allow_singlequote allow_barekey allow_bignum loose escape_slash

   -v
       Verbose option, but currently no action in fact.

   -V
       Prints version and exits.

EXAMPLES

	   $ perl -e'print q|{"foo":"XX","bar":1234567890000000000000000}|' |
	      json_pp -f json -t dumper -json_opt pretty,utf8,allow_bignum

	   $VAR1 = {
		     'bar' => bless( {
				       'value' => [
						    '0000000',
						    '0000000',
						    '5678900',
						    '1234'
						  ],
				       'sign' => '+'
				     }, 'Math::BigInt' ),
		     'foo' => "x{3042}x{3044}"
		   };

	   $ perl -e'print q|{"foo":"XX","bar":1234567890000000000000000}|' |
	      json_pp -f json -t dumper -json_opt pretty

	   $VAR1 = {
		     'bar' => '1234567890000000000000000',
		     'foo' => "x{e3}x{81}x{82}x{e3}x{81}x{84}"
		   };

SEE ALSO

       JSON::PP, json_xs

AUTHOR

       Makamaka Hannyaharamitu, <makamaka[at]cpan.org>

COPYRIGHT AND LICENSE

       Copyright 2010 by Makamaka Hannyaharamitu

       This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.14.2							    2014-09-30								JSON_PP(1)
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