Linux cmdline tool (C source code) for directory monitoring, e.g. data io (MB/s) 

./dirIOc 

 keys: search tree level == 'n' output mode == 'm' pause == 'p' resume == ' ' or 'r' clear screen == 'c' or 'C' help == 'h' or 'H' or '?' quit == 'q' or 'Q' version 0.1.5.1 (C implementation) March 2025 Usage: ./dirIOc /directory/to/monitor 

 chmod +x ./dirIOc ./dirIOc /path/to/directory/for/monitoring/data_io 

for various versions, see <tmp_C> directory