Add jq, curl and bash nodes.
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27
20220130131002-jq.org
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27
20220130131002-jq.org
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:PROPERTIES:
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:ID: 83908b49-3945-4dce-8b26-2a5e4636df13
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:mtime: 20220130131043
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:END:
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#+title: jq
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* Installation
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#+BEGIN_SRC shell
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apt-get install jq
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#+END_SRC
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* [[https://github.com/stedolan/jq/wiki/jq-Language-Description][Description du language jq]]
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* [[https://github.com/stedolan/jq/wiki/Cookbook][Cookbook]]
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* Tips
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** Get a object from a list by attribute value
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#+BEGIN_SRC shell :results output
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raw='[{"name":"dummyNameA","toto":0,"titi":1},{"name":"dummyNameC","toto":2,"titi":3},{"name":"dummyNameB","toto":4,"titi":5}]'
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name='dummyNameB'
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declare -a infos=($(echo "${raw}" | jq -r '.[] | select(.name | contains("'${name}'")) | (.name) + " " + (.titi|tostring) + " " + (.toto|tostring)'))
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echo "infos=${infos[@]}"
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#+END_SRC
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#+RESULTS:
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: infos=dummyNameB 5 4
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45
20220130131134-bash.org
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20220130131134-bash.org
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:PROPERTIES:
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:ID: 72eb2d10-5b92-4fb7-9e4e-1398bd933335
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:mtime: 20220130133646
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:ctime: 20220130131134
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:END:
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#+title: bash
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* Installation
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#+BEGIN_SRC shell
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apt-get install bash
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#+END_SRC
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* Tips
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** Initialiser une variable non intialisée ou null
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#+BEGIN_SRC shell :output dispay
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a=
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c='AAA'
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${a:='coucou'}
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${b:=123}
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${c:='coucou'}
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echo "a=${a}"
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echo "b=${b}"
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echo "c=${c}"
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#+END_SRC
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#+RESULTS:
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| a=coucou |
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| b=123 |
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| c=AAA |
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** Initialiser une variable non initialisée
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#+BEGIN_SRC shell :output dispay
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a=
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c='AAA'
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${a='coucou'}
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${b=123}
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${c='coucou'}
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echo "a=${a}"
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echo "b=${b}"
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echo "c=${c}"
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#+END_SRC
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#+RESULTS:
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| a= |
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| b=123 |
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| c=AAA |
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49
20220130133727-curl.org
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49
20220130133727-curl.org
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:PROPERTIES:
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:ID: 5ea61eaa-7f37-464c-aa69-8251de8f81af
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:mtime: 20220130135414
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:ctime: 20220130133727
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:END:
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#+title: curl
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* Introduction
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* Abréviation de Client URL Request Library,
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* Librairie écrite en C (/libcurl/) et une Interface en ligne de commande,
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* Destinée à récupérer le contenu d'une ressource (désignée à l'aide d'une URL) accessible via un réseau.
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* Permet de créer ou modifier une ressource (contrairement à wget), il peut ainsi être utilisé en tant que client REST,
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* Nombreux bindings (C++, Java, .NET, Perl, PHP, Ruby...),
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* Supporte (/libcurl/) les protocoles DICT, file, FTP, FTPS, Gopher, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, Telnet et TFTP.
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* Installation
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#+BEGIN_SRC shell
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sudo apt-get install curl
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#+END_SRC
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* Tips
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** Obtenir l'en-tête HTTP d'une URL:
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#+BEGIN_SRC shell :output dispay
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curl -I git.adrien.run
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#+END_SRC
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#+RESULTS:
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| HTTP/1.1 | 301 | Moved | Permanently | | | |
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| Server: | nginx/1.18.0 | (Ubuntu) | | | | |
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| Date: | Sun, | 30 | Jan | 2022 | 12:50:54 | GMT |
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| Content-Type: | text/html | | | | | |
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| Content-Length: | 178 | | | | | |
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| Connection: | keep-alive | | | | | |
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| Location: | https://git.adrien.run/ | | | | | |
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| | | | | | | |
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** Problème server de certificats
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Pour outrepasser les erreurs de certificat d'un server (certificat auto-signé par exemple), ajouter le paramètre ~--insecure~
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** Pour obtenir le code HTTP de retour
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#+BEGIN_SRC shell :output display
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result=$(curl -s -o /dev/null -w \"%{http_code}\" https://git.adrien.run)
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echo $result
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#+END_SRC
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#+RESULTS:
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: 200
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* Références
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* [[https://curl.se/docs/manpage.html][Man page]]
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* [[https://yurisk.info/2020/03/13/curl-cookbook/][Yuri Slobodyanyuk curl cookbook]]
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