1. IST 222 Day 6

2. DOS Naming Conventions A filename contains up to 8 characters, a separating period, and a file extension of up to three characters This format is called 8.3 format Accepatable characters: –Any letter –Any digit –_, ^, $, ~, !, #, %, &, -, {, }, (, ), @,

3. Naming Conventions Cont. Under Windows, files and directory names can be up to 255 characters in length DOS trunkates long file names and adds a tilde (~) character to the name Two wildcard characters available –? Wildcard for one character –* wildcard for more than one character Dir a*.???

4. Some DOS Commands Dir – lists files and directories –/p Lists one screen at a time –/w Use wide format Type – displays the contents of a text file on the screen Del or Erase – deletes a file or a group of files Ren – renames a file or folder Copy – copies a file or group of files –Copy c:\docs\*.* a:

5. More DOS Commands Xcopy – works like Copy command, but is more powerful. It will copy all files in a folder as well as in all subfolders Deltree – deletes the directory tree beginning with the subtree you specify Mkdir – creates a subdirectory under a directory Chdir – Changes the current default directory Rmdir – removes a subdirectory –The direcotory must contain no files –The directory must contain no subdirectories –The directory must not be the current default directory

6. More DOS Commands Attrib – displays and changes the attributes assigned to files –+H – hides file –-H – removes the hidden status –+R – makes file read-only –-R – removes read-only status from a file –+A – turn on the archive bit –-A – turn off the archive bit Chkdsk – finds and fixes errors found on disk –/F – fix errors that are found –/V – display all paths and filenames

7. More DOS Commands Scandisk – scans hard drive for errors and repairs them if possible. Scanreg – restores and repairs registry file Defrag – examines disk for fragmented files Debug – editor that can view and manipulate the file system on floppy disks and hard drive Edit – text file editor

8. Homework Go over “Reviewing the Basics”, p. 119 Begin reading Chapter 4 of your text Chapter 4 deals with installing Windows 9x (typical installation) You are to install Windows 98 on your hard drive using the directions found in Chapter 4. Your hard drive is in Locker #4 in Lab 300. Begin the installation process. Combination –Right 3 turns to 20 –Left 1 turn (past above number) to 32 –Right to 03 Your removable hard drive has your name on the drive You may get Windows 98 installation CD from Rajeev