From 1a9139b8fa64f16fc2ca9dc9bbcd8d2d8bc330f8 Mon Sep 17 00:00:00 2001
From: Adrien <adrien.sueur@gmail.com>
Date: Sun, 6 Feb 2022 20:10:11 +0100
Subject: [PATCH] Add jq, curl and bash nodes.

---
 20220130131002-jq.org   | 27 +++++++++++++++++++++++
 20220130131134-bash.org | 45 +++++++++++++++++++++++++++++++++++++
 20220130133727-curl.org | 49 +++++++++++++++++++++++++++++++++++++++++
 3 files changed, 121 insertions(+)
 create mode 100644 20220130131002-jq.org
 create mode 100644 20220130131134-bash.org
 create mode 100644 20220130133727-curl.org

diff --git a/20220130131002-jq.org b/20220130131002-jq.org
new file mode 100644
index 0000000..e329a29
--- /dev/null
+++ b/20220130131002-jq.org
@@ -0,0 +1,27 @@
+:PROPERTIES:
+:ID:       83908b49-3945-4dce-8b26-2a5e4636df13
+:mtime:    20220130131043
+:END:
+#+title: jq
+
+* Installation
+#+BEGIN_SRC shell
+apt-get install jq
+#+END_SRC
+
+* [[https://github.com/stedolan/jq/wiki/jq-Language-Description][Description du language jq]]
+
+* [[https://github.com/stedolan/jq/wiki/Cookbook][Cookbook]]
+
+* Tips
+** Get a object from a list by attribute value
+#+BEGIN_SRC shell :results output
+raw='[{"name":"dummyNameA","toto":0,"titi":1},{"name":"dummyNameC","toto":2,"titi":3},{"name":"dummyNameB","toto":4,"titi":5}]'
+name='dummyNameB'
+declare -a infos=($(echo "${raw}" | jq -r '.[] | select(.name | contains("'${name}'")) | (.name) + " " + (.titi|tostring) + " " + (.toto|tostring)'))
+echo "infos=${infos[@]}"
+#+END_SRC
+
+#+RESULTS:
+: infos=dummyNameB 5 4
+
diff --git a/20220130131134-bash.org b/20220130131134-bash.org
new file mode 100644
index 0000000..911103d
--- /dev/null
+++ b/20220130131134-bash.org
@@ -0,0 +1,45 @@
+:PROPERTIES:
+:ID:       72eb2d10-5b92-4fb7-9e4e-1398bd933335
+:mtime:    20220130133646
+:ctime:    20220130131134
+:END:
+#+title: bash
+
+* Installation
+#+BEGIN_SRC shell
+apt-get install bash
+#+END_SRC
+
+* Tips
+** Initialiser une variable non intialisée ou null
+#+BEGIN_SRC shell :output dispay
+a=
+c='AAA'
+${a:='coucou'}
+${b:=123}
+${c:='coucou'}
+echo "a=${a}"
+echo "b=${b}"
+echo "c=${c}"
+#+END_SRC
+
+#+RESULTS:
+| a=coucou |
+| b=123    |
+| c=AAA    |
+** Initialiser une variable non initialisée
+#+BEGIN_SRC shell :output dispay
+a=
+c='AAA'
+${a='coucou'}
+${b=123}
+${c='coucou'}
+echo "a=${a}"
+echo "b=${b}"
+echo "c=${c}"
+#+END_SRC
+
+#+RESULTS:
+| a=    |
+| b=123 |
+| c=AAA |
diff --git a/20220130133727-curl.org b/20220130133727-curl.org
new file mode 100644
index 0000000..eaa9e5f
--- /dev/null
+++ b/20220130133727-curl.org
@@ -0,0 +1,49 @@
+:PROPERTIES:
+:ID:       5ea61eaa-7f37-464c-aa69-8251de8f81af
+:mtime:    20220130135414
+:ctime:    20220130133727
+:END:
+#+title: curl
+
+* Introduction
+ * Abréviation de Client URL Request Library,
+ * Librairie écrite en C (/libcurl/) et une Interface en ligne de commande,
+ * Destinée à récupérer le contenu d'une ressource (désignée à l'aide d'une URL) accessible via un réseau.
+ * Permet de créer ou modifier une ressource (contrairement à wget), il peut ainsi être utilisé en tant que client REST,
+ * Nombreux bindings (C++, Java, .NET, Perl, PHP, Ruby...),
+ * 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.
+
+* Installation
+#+BEGIN_SRC shell
+sudo apt-get install curl
+#+END_SRC
+
+* Tips
+** Obtenir l'en-tête HTTP d'une URL:
+#+BEGIN_SRC shell :output dispay
+curl -I git.adrien.run
+#+END_SRC
+
+#+RESULTS:
+| HTTP/1.1        | 301                     | Moved    | Permanently |      |          |     |
+| Server:         | nginx/1.18.0            | (Ubuntu) |             |      |          |     |
+| Date:           | Sun,                    | 30       | Jan         | 2022 | 12:50:54 | GMT |
+| Content-Type:   | text/html               |          |             |      |          |     |
+| Content-Length: | 178                     |          |             |      |          |     |
+| Connection:     | keep-alive              |          |             |      |          |     |
+| Location:       | https://git.adrien.run/ |          |             |      |          |     |
+|                 |                         |          |             |      |          |     |
+** Problème server de certificats
+Pour outrepasser les erreurs de certificat d'un server (certificat auto-signé par exemple), ajouter le paramètre ~--insecure~ 
+** Pour obtenir le code HTTP de retour
+#+BEGIN_SRC shell :output display
+result=$(curl -s -o /dev/null -w \"%{http_code}\" https://git.adrien.run)
+echo $result
+#+END_SRC
+
+#+RESULTS:
+: 200
+
+* Références
+ * [[https://curl.se/docs/manpage.html][Man page]]
+ * [[https://yurisk.info/2020/03/13/curl-cookbook/][Yuri Slobodyanyuk curl cookbook]]