diff --git a/aliases/available/kubectl.aliases.bash b/aliases/available/kubectl.aliases.bash
index 0322c931..9ce923a0 100644
--- a/aliases/available/kubectl.aliases.bash
+++ b/aliases/available/kubectl.aliases.bash
@@ -5,12 +5,11 @@
 cite 'about-alias'
 about-alias 'kubectl aliases'
 
-# set apt aliases
 function _set_pkg_aliases()
 {
-	if [ -x $(which kubectl) ]; then
-		alias kc='kubectl'
-		alias kcgp='kubectl get pods'
+  if _command_exists kubectl; then
+    alias kc='kubectl'
+    alias kcgp='kubectl get pods'
     alias kcgd='kubectl get deployments'
     alias kcgn='kubectl get nodes'
     alias kcdp='kubectl describe pod'
@@ -18,8 +17,9 @@ function _set_pkg_aliases()
     alias kcdn='kubectl describe node'
     alias kcgpan='kubectl get pods --all-namespaces'
     alias kcgdan='kubectl get deployments --all-namespaces'
-    alias kcnetshoot='kubectl run --generator=run-pod/v1 netshoot-$(uuidgen | tr A-Z a-z | sed 's/-//g') --rm -i --tty --image nicolaka/netshoot -- /bin/bash'
-	fi
+    # launches a disposable netshoot pod in the k8s cluster
+    alias kcnetshoot='kubectl run --generator=run-pod/v1 netshoot-$(date +%s) --rm -i --tty --image nicolaka/netshoot -- /bin/bash'
+  fi
 }
 
 _set_pkg_aliases
diff --git a/aliases/available/uuidgen.aliases.bash b/aliases/available/uuidgen.aliases.bash
index fec5a2b8..aada05fb 100644
--- a/aliases/available/uuidgen.aliases.bash
+++ b/aliases/available/uuidgen.aliases.bash
@@ -1,6 +1,11 @@
 cite 'uuid-alias'
 about-alias 'uuidgen aliases'
 
-alias uuidu="uuidgen"
-alias uuidl="uuidgen | tr '[:upper:]' '[:lower:]'"
-alias uuid=uuidl # because upper case is like YELLING
+if _command_exists uuid; then # Linux
+  alias uuidu="uuid | tr '[:lower:]' '[:upper:]'"
+  alias uuidl=uuid
+elif _command_exists uuidgen; then # macOS/BSD
+  alias uuidu="uuidgen"
+  alias uuid="uuidgen | tr '[:upper:]' '[:lower:]'" # because upper case is like YELLING
+  alias uuidl=uuid
+fi