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www/eps/hpr2610/hpr2610_awk12_ex10.awk

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+#!/usr/bin/awk -f
+
+#
+# Sort the indices as strings in ascending order
+#
+BEGIN{
+    PROCINFO["sorted_in"]="@ind_str_asc"
+}
+
+#
+# Make a frequency table of the first letter of each word
+#
+{
+    freq[substr($1,1,1)]++
+}
+
+#
+# Print the results in the frequency table
+#
+END{
+    for (i in freq)
+        printf "%s: %d\n",i,freq[i]
+}