Added tmpfifo command to the file tree.

primitives/tmpfifo

@@ -0,0 +1,20 @@
+#!/bin/sh
+# Creates a fifo named after the first argument.
+
+FIFODIR="/tmp/fifo"
+mkdir -p "$FIFODIR"
+if [ $? != "0" ] ; then
+ echo "Couldn't make FIFO directory: $FIFODIR" >&2
+else
+ if [ "$1" = "" ] ; then
+  NAME="fifo"
+ else
+  NAME="$1"
+ fi
+ NUMBER=1
+ while [ -e "$FIFODIR/$NAME-$NUMBER" ] ; do
+  NUMBER=$(($NUMBER+1))
+ done
+ mkfifo "$FIFODIR/$NAME-$NUMBER"
+ echo "$FIFODIR/$NAME-$NUMBER"
+fi