ls -l							= list the content of current directory
find /etc/ -name "*.conf"				= find files with given name
locate *.name						= find the files
grep network /etc/init.d/* 2> /dev/null			= find strings inside files
CTRL+c							= stop the given process
df -h							= check available disc space
du -sh ./*						= check the size of the files in a give directory
ssh username@taito.csc.fi				= connect to the given server
scp file.txt username@taito.csc.fi:.			= copy file.txt to Taito
rsync -avt linux_learn.txt user@taito.csc.fi:'$HOME'	= copy file
wget http://ftp.gnu.org/gnu/hello/hello-2.7.tar.gz	= get file from the web
zip linux_zip.zip linux_learn*				= create a zip archive
unzip -l linux_zip.zip					= list the content of zip archive
unzip linux_zip.zip					= unzip the archive
tar -cvf linux_learn.tar linux_learn*			= create a tar archive
tar -xvf linux_learn.tar				= extract tar archive
rm linux_learn_copy.txt					= remove the file linux_learn_copy.txt
ln -s ../linux_learn.txt linux_lear_symbolic_link.txt	= create a symbolic link to a file
chmod u+x file.txt					= add execute permissions
export PS1='\[\033[1;30m\]\u\[\033[0m\]@\[\033[1;34m\]\h\[\033[0m\]:[\w]# ' = set your command prompt; run 'source .profile' to apply it