Unix, Linux, DOS, Windows Command Line CSE 660 May 12, 2008

Command Languages / Shells Unix / Linux – bash – Many other shells DOS / Windows –.bat – Cygwin( – Linux-like environment for Windows making it possible to port software running on POSIX systems (such as Linux, BSD, and Unix systems) to Windows. POSIX – IEEE name for Unix standard

stdin, stdout, pipes, filters pass output to something else > take input from file < pipe output from one program to another | little programs that act like filters – break source text file into words – sort that file of words – compare against file of correctly spelled words – print non-matching original words (misspelled)

pipes ls –l | less Garbage out.dat

Unix man One of the innovations of Unix Online manuals are available on all the commands by typing "man command_name". To find out how to do something on UNIX simply type "man -k subject_matter". This will do a key word search for all commands dealing with the subject matter. Then use the appropriate command.

DOS.bat vs. bash UNIX Unleashed, System Administrator's Edition, Chap 13: Which Shell Is Right for You? Shell Comparison ( UNIX For DOS Users ( _dos_users.html) _dos_users.html

DOS vs bash DOS UNIX / bashAction DIR ls List directory contents TREE ls -R List directory recursively CD cd Change directory MDmkdir Make a new directory RD rmdir Remove a directory COPY cp -piv Copy a file XCOPY cp –R Copy all files of directory recursively

For the DOS user who forgets alias dir="echo 'Use the command: ls -lF'" alias tree="echo 'Use the command: ls -R'" alias del="echo 'Use the command: rm -iv'" alias move="echo 'Use the command: mv -iv'" alias rename="echo 'Use the command: mv -iv'" alias copy="echo 'Use the command: cp -piv'" alias type="echo 'Use the command: cat'" alias cls="echo 'Use the command: clear’”