Go to a different directory
cd
Show the files in the directory
ls
Find out what directory you are in
pwd
How to reorder a file alphabetically or numerically
sort
The command to log into the server
ssh
Make a directory or folder
mkdir
Show the contents of a file
cat, more, less
Find all lines with that match the given text
grep
Compress a file
gzip
The symbol to redirect output into a file
>
Delete a file
rm
Show the first 10 lines of a file
head
Remove all lines that match the given text
grep -v
cut or awk
The command to see your previous commands
history
Get a file, leaving the original in place
cp
Shorthand for you home directory
~
Soft link to another file
ln -s
How to remove redundant lines
uniq
The symbol to redirect the output into the next command
| (pipe)
Get a file without leaving the orignial
Show the files in the directory in long format, sorting by oldest to newest
ls -ltr
zgrep -c
Substitute some text for other text
sed
How to abort a command
ctrl-c