Don't add ip aliases on MacOS.

etc/profile.d/z-aliases.sh

@@ -10,13 +10,12 @@ if ! which ll 2>/dev/null; then
     alias ll='ls -l --color=auto'
 fi
 
+# color less (restricted)
+alias less='less -R'
+
 if [[ "$OSTYPE" != darwin* ]]; then
     # long format with ISO dates
     alias lll='ls -Al "--time-style=+%Y-%m-%d %H:%M:%S %4Z"'
-fi
-
-# color less (restricted)
-alias less='less -R'
 
     # color ip route
     if ip -V | grep '^ip utility, iproute2-.*, libbpf' &>/dev/null; then
@@ -26,3 +25,4 @@ else
         # EL 7 - "ip utility, iproute2-ss170501"
         alias ip='ip -c'
     fi
+fi