Every distro I've used so far, bash is in /bin, not /usr/bin.
Change it to
To verify where bash in in PCLOS, in a console window, enter 'which bash' (without quotes).
You might also try splitting up the du command line. Put the du -s * part at the end of the 'disk usage' line, and the sort -mk 1,1 part at the end of the 'file by size' line.
PS: I've got a working copy of the corrected code which still needs a minor tweak or two to format display. If you haven't solved it in a couple of days, show me what you've got. Then I'll show you mine.
No kinky thoughts from you perverts please.