Students should know how to use the following commands.
Options required are given in [ ].

grep [-v]
ls [-ladi]
ps [-ef]
sort [-r -k]
uniq [-c]
cat
head [-]
tail [-]
cut [-f -d]
wc [-l]
diff
svn [commit add remove move update info log status diff]

chmod [all major options]
ln [-s]
rm [-rf]
mkdir
rmdir
cp [-r]
mv 
vi/pico