Perhaps ... in this case it may make things easier to understand if those "mon_NODE_*" directories are sub-directories of the appropriate "mon_L3_*" directories.
Reinette,
Like this?
$ tree mon_data/ mon_data/ ├── mon_L3_00 │ ├── llc_occupancy │ ├── mbm_local_bytes │ ├── mbm_total_bytes │ ├── mon_NODE_00 │ │ ├── llc_occupancy │ │ ├── mbm_local_bytes │ │ └── mbm_total_bytes │ └── mon_NODE_01 │ ├── llc_occupancy │ ├── mbm_local_bytes │ └── mbm_total_bytes └── mon_L3_01 ├── llc_occupancy ├── mbm_local_bytes ├── mbm_total_bytes ├── mon_NODE_02 │ ├── llc_occupancy │ ├── mbm_local_bytes │ └── mbm_total_bytes └── mon_NODE_03 ├── llc_occupancy ├── mbm_local_bytes └── mbm_total_bytes
-Tony