From eb31d9721fad1bd795f746084f5c4b0b0eac9dab Mon Sep 17 00:00:00 2001
From: pdiogoantunes <pdiogoantunes+gitit@evolix.fr>
Date: Wed, 15 Mar 2017 16:29:37 +0100
Subject: [PATCH] ajout dpkg cmd

---
 HowtoDebian/Packages.md | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/HowtoDebian/Packages.md b/HowtoDebian/Packages.md
index bfdd5cc3..ca30fd55 100644
--- a/HowtoDebian/Packages.md
+++ b/HowtoDebian/Packages.md
@@ -136,3 +136,23 @@ Avec un _strace lintian_ vous obtiendrez peut-être :
 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f09117029d0) = -1 ENOMEM (Cannot allocate memory)
 ~~~
 
+## Savoir si un package est installé
+
+~~~
+# apt-cache search php | grep apc
+php-apc - APC User Cache for PHP 5 (transitional package)
+php5-apcu - APC User Cache for PHP 5
+# dpkg -l php-apc | grep ^ii
+~~~
+
+## Savoir la hiérarchie des fichiers créés suite installation d'un package
+
+~~~
+# dpkg -L php-apc
+/.
+/usr
+/usr/lib
+/usr/lib/php5
+/usr/lib/php5/20090626
+...
+~~~