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a2b1ed6)
this produces a total that includes blank lines in the average and
another that excludes the blank lines.
--- /dev/null
+#!/bin/bash
+
+file="$1"; shift
+if [ -z "$file" -o ! -f "$file" ]; then
+ echo This script needs a filename to operate on as a parameter.
+ echo The file will be examined and the average line length calculated.
+ exit 1
+fi
+
+cat "$file" |
+awk ' { thislen=length($0); # printf("lines %-5s len %d total %d\n", numlines, thislen, totlen);
+ totlen+=thislen
+ if (thislen != 0) { numlines++ } }
+END { printf("average line length: %d (no blank lines) or %d (counting blank lines)\n", totlen/numlines, totlen/NR); } '
+
+