To get info on your environment: env
to do a case-insensitive searc for .pm files in /usr and subfolders:
find /usr -iname '*.pm'
To get a terminal type xfce4-terminal in the Alt+F2 box
To find a string of alpha characters between 100 and 200 characters long in finnwake.txt:
grep "[A-Za-z]\{100,200\}" finnwake.txt
To find words between 25 and 30 characters without vowels:
grep -w "[^aeiouy]\{25,30\}" finnwake.txt
to exit a MAN screen, use q
to page down in a MAN screen, use f
to page up in a MAN screen, use b