Riki's Linux adventures

First of all, some simple tutorial that you can read:
Bash for beginners
Bash for beginners2

A list of useful commands that I use a lot of times:

Use Tab to autocomplete the command or show a list of alternatives
ls -ltrh list last modified files at the bottom
cd some_other_directory change directory
vim some_file_to_edit my favourite editor (vim tutorial). Of course, you can choose an other favourite editor on the terminal!
cp somefile destination copy somefile to destination
rm some_file remove some_file
rm -r some_directory remove some_directory
mv something new_name move something to new_name
Ctrl + C kill current running program
cat some_file dump some_file on the terminal
pwd print current directory name
tail -f some_file show last few line of some_file, wait for new lines that are written by some other program to some_file (for example a simulation) and print them.
tar xf filename.tar.whatever extracts the content of the archive in the current directory (it understand automagically the type of archive)
tar cvjf newarchive.tar.bz2.willbeoverwritten folder1 file1 file2 ... compress the file/folder list in the new archive
Ctrl + R + some text to search a command in the commands history