removed mkbackup script, refactored all script files to use pkgs.writeShellApplication rather than pkgs.writeShellScriptBin

modules/home/scripts/commands/icanhazip.nix

@@ -1,6 +1,23 @@
 { pkgs }:
 
-pkgs.writeShellScriptBin "icanhazip" ''
-  echo "Public IP: $(curl -s icanhazip.com -4)"
-  ip route | awk '/default/ {print "Default Gateway: " $3} /src/ {print "Local IP: " $9}' | head -n 2
-''
+pkgs.writeShellApplication {
+  name = "icanhazip";
+  runtimeInputs = with pkgs; [
+    iproute2
+    curl
+    gawk
+    coreutils
+  ];
+  text = ''
+    if [ $# -eq 0 ]; then
+      echo "Public IP: $(curl -s icanhazip.com -4)"
+      ip route | awk '/default/ {print "Default Gateway: " $3} /src/ {print "Local IP: " $9}' | head -n 2
+    else case $1 in
+      "-p" ) echo "Public IP: $(curl -s icanhazip.com -4)";;
+      "-d" ) ip route | awk '/default/ {print $3}';;
+      "-l" ) ip route | awk '/src/ {print $9}';;
+      * ) echo "Options: -p, -d or -l for public ip, default gateway, and local ip respectively"; echo "i.e. icanhazip -p"
+      esac
+    fi
+  '';
+}