MS-DOS External Commands  Part-6  (Video Tutorial):

External Commands:These are also called Disk-Resident Commands. These commands are meant for special purpose. These are found in separate files on Hard Disk or Floppy Disk, So that they don’t typically consume valuable memory space. They are loaded into memory only when called.

Some External Commands List: label, tree, sort, format, more, convert, sort, chkdsk, mem, xcopy, attrib, mode, move, edit, color.
 
In this video you are learning about, label, tree, sort, format & more. Remaining commands will continued in next tutorial.


(1) Label: To create, change a volume name for a particula disk.
    Syntax: C:\> label <enter the drive name>
    Ex: C:\> label shiva

(2) TREE: To view pictorial representation of existing sub directories.
    Syntax: C:\> tree
    Ex: C:\> tree

   switch: To view only particula drive/directory and its files list.
   Syntax:  C:\> tree <directory name/f>

(3) SORT: This command is used to arrages all the data in 'Ascending order' or 'Descending order'
Syntax:(i)  C:\> type <filename>|sort (Ascending Order)
Ex: C:\> type swamy.txt|sort

Syntax:(ii) C:\> type <filename>|sort/r (Descending order)
Ex: C:\> type swamy.txt|sort/r

(4) FORMAT: This command is used to create a file system and during this process data will be lost (or) To initialize a disk to accept dos information and files. It also checks the disk for defective tracks and places dos on the diskette.
Syntax: C:\> format <drive>
Ex: C:\> format j:

(5) MORE: This command is used to displays the information of a file page by page.
Syntax: C:\> type <filename>|more
Ex: C:\> type swamy.txt|more

In this video you learnt about, label, tree, sort, format & more. Remaining commands will continued in next tutorial.

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