Linux & ApplicationsSean Gavin Wayne State University
• multi-user environment-- log in: user name and password -- you never turn the computer on or off
Linux
• Linux with KDE graphic user interface
• navigation – where are my files?
• command line interface – listing, moving, finding, copying … my files
• applications – web browsing, text viewing, editing … my files
graphic user interface
•KDE •GNOME
makes the desktop look like a windows desktop – point and click
home – directory browser
search for files
help
shell – terminal for entering text commands
start menu – like windows
icons
Command Line Interface
• Shell Icon – window with a “prompt” rhic15:sean> ls
• type keyword commands – execute programs
• command “ls” lists files in a directory
• file names have format name.xxx (no blank spaces!!)• xxx – extension indicates the files function sean.tex < word processor
(latex)sean.cpp, sean.f < C++ or Fortran programmomLetter.txt < plain text (asci)web_page.htm < web document (html)
• no blank spaces, case sensitive
Favorite Unix Commands
• ls list files > ls > ls *.txt(list files with extension .txt)
• ls –l list files with size, etc. > ls –l *.cpp• ls –a list all files > ls –a • lpr prints files > lpr sean.txt (default printer)
> lpr –Pmono1200 sean.txt (specify printer)• cd change directory > cd MyDirectory
> cd ( home directory) • mkdir make new directory > mkdir MyNobel• rm remove file > rm wrongStuff.txt• rmdir remove directory > rm WrongStuff (delete contents first)• cp copy file > cp old.txt new.txt (keeps old.txt)• mv move file > mv old.txt new.txt (kills old.txt)• more types file on screen > more money.txt• pwd print working directory > pwd
FTP – Moving Files
Running Programs from Command Line
can type program name at the prompt to start application:> netscape & web browser> ghostview pic.ps & postscript file viewer> gv pic2.eps & a better postscript viewer> acroread taxReturn.pdf & acrobat pdf file viewer
compile and execute programs that you have written
text editors: emacs, xemacs
note: also find common programs are on the start menu
Summary
Unix – many choices, infinite possibilitiesThe setup at BNL, Cornell, Fermi will be different
• navigation in KDE graphic user interface
• command line interface – ls, cd, mv, cp, rm
• applications – netscape, ghost view, xemacs