echo "*** EXECUTABLE BINARY COMMANDS"
/bin/date
date
pwd
ls
ls -al
echo
echo one two three
echo one "two   three" four
printenv
printenv PATH
printenv HOME

echo "*** SHELL BUILTIN COMMANDS (cd, setenv, unsetenv)"
cd /usr
pwd
cd bin
pwd
cd
pwd
setenv XXX 123
printenv
printenv XXX
unsetenv XXX
printenv
printenv XXX

echo "*** REDIRECTION"
ls > junk
cat junk
cat < junk
cat < junk > junk2
cat junk2
cat > junk3 < junk2
cat junk3
cat junk2 > junk4 junk3
cat junk4
rm junk junk2 junk3 junk4

echo "*** ERRONEOUS COMMANDS"
echo "one
cd dir1 dir2
setenv
unsetenv
echo one >
echo one > junk1 > junk2
cat < nosuchfile
nosuchcommand

echo "*** UNUSUAL COMMANDS"
echo one ">" junk
echo one > ">"
cat ">"
rm ">"