diff --git a/BSD.md b/BSD.md
index 97ca564..283bcd9 100644
--- a/BSD.md
+++ b/BSD.md
@@ -27,6 +27,10 @@ sudo apt -y dist-upgrade
 sudo snap refresh
 flatpak update
 ```
+search.sh
+```
+sudo apt-cache search $1
+```
 clean.sh
 ```
 sudo apt clean
@@ -40,7 +44,11 @@ sudo apt -y install $1
 uninstall.sh
 ```
 sudo apt remove $1
-# more dangerous, all configs and data: sudo apt --purge remove $1
+```
+uninstall-all.sh
+```
+# more dangerous, all configs and data:
+sudo apt --purge remove $1
 ```
 shutdown.sh
 ```
@@ -53,6 +61,8 @@ sudo shutdown --reboot now
 
 ## FreeDOS
 
+https://www.freedos.org
+
 When installing to VirtualBox, set harddisk .vdi growable max size to 4000 MB / 4 GB, because LiveCD + BonusCD could take nearly 2 GB total disk space.
 
 1. Install from LiveCD
@@ -60,10 +70,20 @@ When installing to VirtualBox, set harddisk .vdi growable max size to 4000 MB /
 3. Insert BonusCD
 4. Update and install software
 
+https://fdnpkg.sourceforge.net
+
 update.bat
 ```
 fdnpkg update
 ```
+search.bat
+```
+fdnpkg search $1
+```
+install.bat
+```
+fdnpkg install $1
+```
 reboot.bat
 ```
 reboot
@@ -75,6 +95,8 @@ shutdown
 
 ## NetBSD
 
+Package management: https://www.netbsd.org/docs/pkgsrc/using.html
+
 Before these, change to root:
 ```
 su
@@ -83,6 +105,10 @@ update.sh
 ```
 pkgin upgrade
 ```
+search.sh
+```
+pkgin search $1
+```
 install.sh
 ```
 pkgin install $1
@@ -102,6 +128,8 @@ shutdown -r now
 
 ## OpenBSD
 
+Package management: https://www.openbsd.org/faq/faq15.html
+
 Before these, change to root:
 ```
 su
@@ -110,6 +138,10 @@ update.sh
 ```
 pkg_add -u
 ```
+search.sh
+```
+pkg_info -Q $1
+```
 install.sh
 ```
 pkg_add $1