From 8f263e859e0970ce87b77addc80dec28e8fc7e82 Mon Sep 17 00:00:00 2001
From: wukong <wukong@longaeva>
Date: Tue, 5 Jun 2018 22:34:51 -0700
Subject: re-init

---
 sum2.awk | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 sum2.awk

(limited to 'sum2.awk')

diff --git a/sum2.awk b/sum2.awk
new file mode 100644
index 0000000..0b2aad3
--- /dev/null
+++ b/sum2.awk
@@ -0,0 +1,16 @@
+### sum2.awk, print column sums
+# check that each line has the same number of fields as line one
+
+NR==1 { nfld = NF }
+
+{
+    for (i=1; i<=NF; i++)
+        sum[i] += $i
+    if (NF != nfld)
+        print "line " NR " has " NF " entries, not " nfld
+}
+
+END {
+    for (i=1; i<=NF; i++)
+        printf("%g%s", sum[i], i < nfld ? "  " : "\n")
+}
-- 
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