readme update

Makefile

@@ -20,8 +20,13 @@ TARGET = pcapmirror
 
 # Installation directory
 PREFIX = /usr
-ifdef prefix
-PREFIX = $(prefix)
+
+ifndef BINDIR
+BINDIR = $(DESTDIR)$(PREFIX)/bin
+endif
+
+ifndef MANDIR
+MANDIR = $(DESTDIR)$(PREFIX)/share/man
 endif
 
 # Default rule
@@ -47,9 +52,10 @@ clean:
 
 # Install the executable
 install: $(TARGET)
-		mkdir -p $(DESTDIR)$(PREFIX)/bin
-		install -s -D $(TARGET) $(DESTDIR)$(PREFIX)/bin/$(TARGET)
-		install -D $(TARGET).8 $(DESTDIR)$(PREFIX)/share/man/man8/$(TARGET).8
+		mkdir -p $(BINDIR)
+		mkdir -p $(MANDIR)/man8
+		install -s $(TARGET) $(BINDIR)/$(TARGET)
+		install $(TARGET).8 $(MANDIR)/man8/$(TARGET).8
 		
 
 # Uninstall the executable

README.md

@@ -31,7 +31,7 @@ pcapmirror [options]
 To capture traffic on the eth0 interface, filter for TCP port 80, and send it to the destination, use the following command:
 
 ```bash
-sudo pcapmirror -i eth0 -f "tcp port 80" -r 192.168.1.100 -p 47008 -v
+sudo pcapmirror -i eth0 -f "tcp port 80" -r 192.168.1.100 -p 37008 -v
 ```
 *Note*: Running pcapmirror typically requires root privileges due to the use of libpcap for capturing network traffic.
 
@@ -49,6 +49,12 @@ To avoid capturing traffic from your own monitoring machine, configure Wireshark
 
 On the original download location you will also find several prebuilt packages.
 
+# Install via Homebrew (macos, linux)
+
+```bash
+brew install pcapmirror
+```
+
 ## Compile and Install
 
 ### Supported Operating Systems