diff --git a/bin/pk b/bin/pk
index 32320d4..a7edbdf 100755
--- a/bin/pk
+++ b/bin/pk
@@ -1,42 +1,48 @@
 #!/bin/sh
 search () {
   shift 
-  if which pacman >/dev/null; then
+  if command -v pacman &> /dev/null; then
     pacman -Ss $1 || yay -Ss $1
-  elif which port >/dev/null; then
+  elif command -v dnf &> /dev/null; then
+    dnf search $1
+  elif command -v port &> /dev/null; then
     port search $1
-  elif which portmaster >/dev/null; then
+  elif command -v portmaster &> /dev/null; then
     cd /usr/ports
     make search name=$1 | grep "^\(Port\|Path\|Info\|Moved\|$\)"
-  elif which aptitude >/dev/null; then
+  elif command -v aptitude &> /dev/null; then
     aptitude search $1
-  elif which apt-cache >/dev/null; then
+  elif command -v apt-cache &> /dev/null; then
     apt-cache search $1
   fi
 }
 
 update () {
   shift
-  if which pacman >/dev/null; then
+  if command -v pacman &> /dev/null; then
     sudo pacman -Sy
-  elif which port >/dev/null; then
+  elif command -v dnf &> /dev/null; then
+    sudo dnf update
+  elif command -v port &> /dev/null; then
     sudo port selfupdate
-  elif which portmaster >/dev/null; then
+  elif command -v portsnap &> /dev/null; then
     sudo portsnap fetch && sudo portsnap upgrade
-  elif which apt-get >/dev/null; then
+  elif command -v apt-get &> /dev/null; then
     sudo apt-get update
   fi
 }
 
 install () {
   shift 
-  if which pacman >/dev/null; then
+  if command -v pacman &> /dev/null; then
     sudo pacman -S $* || yay -S $*
-  elif which port >/dev/null; then
+  elif command -v dnf &> /dev/null; then
+    sudo dnf install $*
+  elif command -v port &> /dev/null; then
     sudo port install $*
-  elif which portmaster >/dev/null; then
+  elif command -v portmaster &> /dev/null; then
     sudo portmaster $*
-  elif which apt-get >/dev/null; then
+  elif command -v apt-get &> /dev/null; then
     sudo apt-get install $*
   fi
 }