Show:
very very basic
pretty basic
basic stuff
gettin' hard
hardest
100
present working director
What is pwd
100
ls
What is list contents of a file
100
cp
What is copy files
100
combine files
What is cat, concatenate
100
df
What is command shows free disk space
200
mkdir
make a new directory
200
yum
What is package manager
200
rm
What is remove files
200
~
What is symbol for home directory, tilde
200
ps
What is command shows process status
300
cd
What is change directory
300
mv
What is move files and directories
300
which wild card represents all files
What is *
300
lpq
What is show print que status
300
grep
What is command finds words in text
400
more
What is display contents of a file
400
groups
What is list the groups you are in
400
finger
What is show user information
400
>
What is output to a new file
400
command to remove print job
What is lprm
500
mv
What is rename files and directories
500
chmod
What is change file permissions
500
which letter represents execute permission
What is x
500
symbol send output to another program
What is |, pipe
500
command to tell process to die immediately
What is kill -9