sudo find / - name
"x.crt" - o - name

"*.key" 2 / dev nul

study  grep

study index.php

study bindex.html

lynis  -- stored in usr/bin directory

CAT AUTHORIZED - keys  readys file and spites it out

ls.shh

ls- list

mv 

cp - omporss

rm rm-rfv or rf

remdi ---= removed directory

mv folder name

man --- manual pages

man rm

chmod -- chage file mode

file mode

know host - browing shistory

chown -- only adm

sudo chown -- normal people cant

wgt - web get -- down loads file