#!/bin/sh
# diskspace - summarize available disk space and present in a logical
# and readable fashion
tempfile="/tmp/available.$$"
trap "rm -f $tempfile" EXIT
cat << 'EOF' > $tempfile
{ sum += $4 }
END { mb = sum / 1024
gb = mb / 1024
printf "%.0f MB (%.2fGB)\n", mb, gb
}
EOF
df -k | awk -f $tempfile
exit 0