ref: ba4a1c07f1bc7622f8a3dcd4f2d383f4ec70fc1c
dir: /test/t.time/
BEGIN {
FS = "-"
}
/sh$/ {
n++
l = length($NF)
s += l
ck %= l
totck += ck
print
}
END {
if (n > 0) {
printf "%d %d %d %fn\n", totck, n, s, s/n
}
else
print "n is zero"
}