diff --git a/how_to b/how_to
index 4efa3f2..5bb7c95 100644
--- a/how_to
+++ b/how_to
@@ -51,6 +51,8 @@ pacman :
     -Rns <>     Remove program, its unused dependencies, and config files
     -Qi <>      Package information
     -Fo <file>  Which package the file belongs to
+    Recover installed packages from /var/log/pacman.log
+        (awk '$3 ~ /installed/{print $4}' /var/log/pacman.log | sort | uniq; sed -En 's@.*/home/lhark/aur/(.*)/.*@\1@p' /var/log/pacman.log) | sort | uniq -u > package-list
 
 ABS : (Arch Build System)
     pacman -S abs