REVIEW OF FREQUENTLY USED UNIX COMMANDS
GENERAL COMMAND SYNTAX:
$ command –[options] <arguments>
DISPLAYING CONTENTS OF A DIRECTORY:
$ ls (simple form)
$ ls –l (long form)
$ ls –la [long form and all files including hidden files. (hidden filenames begin with a dot)]
DISPLAYING FILENAMES THAT HAVE COMMON START/END:
$ ls –l chapter* (shows filenames like chapter01, chapter02, chapterfour, etc)
$ ls –l *.txt (shows filenames like book.txt, song.txt, readme.txt, etc)
DISPLAYING CONTENTS OF ONE OR MORE FILES:
$ cat song.txt
$ cat song.txt book.txt readme.txt
COPYING/MOVING/RENAMING FILES:
$ cp file1.txt file2.txt (copies! file1.txt also exists)
$ mv file1.txt file2.txt (renames! file1.txt NO longer exists)
$ mv file1.txt docs/year2005/file1.txt (moves! from current directory to docs/year2005 directory)
$ mv file1.txt docs/year2005/file2.txt (moves and renames! from current directory to docs/year2005 directory)
CREATING DIRECTORIES:
$ mkdir year2005 year2006
$ mkdir year2005/docs year2005/pics
CREATING/MODIFYING FILES USING pico EDITOR:
$ pico year2005/docs/myfile.txt
pathname
type in
press Ctrl + X to EXIT
DELETING FILES/DIRECTORIES:
$ rm year2005/docs/myfile.txt (deletes myfile.txt)
$ rm song.txt book.txt readme.txt (deletes song.txt and readme.txt)
$ rmdir year2006 (deletes the empty directory year2006)
$ rm -r year2005 (deletes the non-empty directory year2005)
CHANGING FILE PERMISSIONS:
Users:
a-all
u-owner
g-group
o-others
Permissions:
r-read
w-write
x-execute
$ chmod a+x hello2 (gives all users execute permission for the file hello2)
$ chmod go-w hwk1.txt (removes write permission from group and other users for the file hwk1.txt)
$ chmod g+rw song.txt (gives read and write permissions to group users for the file song.txt)
Kaynak: sct.emu.edu.tr
belgesi-1156
