I have thousands files in hierarchy like /somewhere/year/month/day/hour/files. Also files are named accordingly, nfcapd.yearmonthdayhourminute. In both cases all one number data (month, day, hour) are padded with zero to two places, for example 2020/01/01/01/nfcapd.2020010101xx (for minutes). And now I need to move all of them one step in filesystem hierarchy up, effectively eliminating the hour directory in the structure. How would you do it, preferably using shell without installing any additional software?