rpi-4: add 'l' and 'la' aliases to /etc/profile

configs/rpi-4-files/etc/uci-defaults/90-profile-aliases

@@ -0,0 +1,9 @@
+#!/bin/sh
+
+# add some commonly used aliases
+file=/etc/profile
+grep -q "alias l" ${file} ||
+    cat <<EOF >> ${file}
+alias l='ls -lF'
+alias la='ls -alF'
+EOF

configs/rpi-4-files/etc/uci-defaults/99-custom

@@ -1,10 +1,11 @@
 #!/bin/sh
 
 # Read all about UCI defaults at
-# https://openwrt.org/docs/guide-developer/uci-defaults)
+# https://openwrt.org/docs/guide-developer/uci-defaults
 
 # Note that scripts in /etc/uci-defaults will get executed at *every* first
 # boot (i.e. after both factory install as well as upgrades),
 # possibly overwriting already existing values!
+# scripts in this dir should *not* be executable
 
 exit 0