Difference between alias and duplicate
Alias vs duplicate:
It is no secret that apple has conquered the world surpassing Windows in the process. Anyone who is familiar with Apple’s operating system, MAC OS, he must know about two different commands, duplicate and alias. Not only Apple users, but also the other operating systems might find these two nouns exactly similar. However, the truth is that these two commands differ from each other although it is hard simply to see how it happens. Simply their function, creation and the practical application differ. Therefore, this paper aims at introducing these two commands for people who identify them as just nouns along with a brief discussion how these two commands differ from each other.
What is an alias?
Alias, a noun which means ‘assumed name’ or verb meaning ‘also known as’, creates a new small file or folder that links to the original. In Mac OS System 7 and later, an alias is a small file that represents another object in a local, remote, or removable file system and provides a dynamic link to it; the target object may be moved or renamed, and the alias will still link to it, unless the original file is recreated; such an alias is ambiguous and how it is resolved depends on the version of Mac OS X. In Windows, the same function is performed with a “shortcut” (a file with a .lnk extension). It is similar to the Unix symbolic link, but with the added benefit of working even if the target file moves to another location on the same disk. In this case it acts like hard link, but the source and target of the link may be on different file systems).
What is a duplicate?
‘Duplicate’ is a noun that pertains to a copy that exactly corresponds to an original and a verb that means to double, repeat or perform again. Duplicate simply makes a copy of a file in the same location as the original. It is basically having double files. It shouldn’t however be mistaken for ‘copy’ function. Copy creates an identical file but instead of storing it in the same location, it puts it in the clipboard. Duplicate copies the same file and therefore it doubles the size. This is what you need for backing up purposes. They are completely separate and have no relationship to one another once the copying is finished. Here, although one is changed, the other stays the way it was. One can duplicate a file by selecting the ‘File’ menu and then duplicate option. Since two similarly named files cannot exist in the same folder, the duplicate file will add an appendage ‘copy’ to its file name. The duplicate can be moved to another folder and be assigned a different name.
What is the difference between duplicate and alias?
Alias and duplicate are two different file types mainly used in MAC OS. Alias simply acts as a shortcut of a file while a duplicate is a copy of a file. Alias is linked to its root file and duplicate, once its copying is over has no connection with its root file. Since alias is just a shortcut, it does not double the size of its original file. But a duplicate, as it is completely a different file, which contains all the sub files of the original doubles the size of the original. Therefore, duplicates are often used in backup purposes. Creation of these two files is different. When a duplicate is created, from the ‘File’ menu duplicate option has to be selected so that the duplicate is created at the same location. When creating an alias, it can be created by going to the Finder, selecting the file for which to create an alias, and then choosing File, and lastly Make Alias. a duplicate has ‘Copy’ attached to its name as two similarly named files cannot be existed in the same location. On the other hand, an alias has ‘alias’ attached to the file name. Both files can be moved to different locations.
A duplicate item loses any connection or relation to the original one. This means that if one is edited, renamed, or shared, the other would not in any way be affected. Deleting a duplicate doesn’t also erase the original and vice-versa. Since an alias is a mere link to the original file, whatever alteration made to it will also apply to the original file or folder. Deleting an alias icon won’t do any harm to the original file. What’s actually being deleted is just the link. An alias is a practical way to access files, especially those that are rather difficult to take hold of. Once the original file is deleted, the alias does not contain the files, which were previously stored in the original file. In addition, the size of an alias is so insignificant; it barely eats up disk space. Conversely, a duplicate nearly consumes as much space as the original item does. Creating multiple duplicates can only fill up the Mac’s hard disk.
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