+io_net=$(
+ awk '
+ BEGIN {
+ bytes_per_unit = 1024
+ }
+
+ NR > 2 {
+ device = $1; sub(":$", "", device);
+ curr_read = $2;
+ curr_write = $10;
+
+ prev_file_prefix = "/home/siraaj/var/run/status/io_net_" device;
+ prev_read_file = prev_file_prefix "_read";
+ prev_write_file = prev_file_prefix "_write";
+
+ getline prev_read < prev_read_file;
+ getline prev_write < prev_write_file;
+
+ diff_read = (curr_read - prev_read ) / bytes_per_unit;
+ diff_write = (curr_write - prev_write) / bytes_per_unit;
+
+ print curr_read > prev_read_file;
+ print curr_write > prev_write_file;
+
+ printf("%s %0.0f▲ %0.0f▼\n", device, diff_write, diff_read);
+ }
+ ' /proc/net/dev
+)
+