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What order were files/directories outputted in dir?



Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 23, 2019 at 00:00UTC (8:00pm US/Eastern)How do modern .bat files differ from old MS DOS .bat files?Where and what was Haunt.bat? A game pre-loaded on a c1992 PCWhich MS-/PC-DOS version was the first to allow multiple partitions to be used?Transfer files to DOS over serial cable from Linux?Is there a way to link object files for DOS from Linux?Why were teletype printers not used for DOS computers?How to patch binaries in DOS?What are these tiny TSRs doing?An old DOS application that allowed to create cards, posters, invitations, etcWere 9.2 file names possible in MS-DOS?










1















In the version of command.com included MS-DOS, dir seems to print files in a random order, but if one runs multiple dir commands, they all print the files in the same order. This order does not appear to be based on date, size, or alphabetization. So what is the order? Does it simply print whatever files it finds first?










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    1















    In the version of command.com included MS-DOS, dir seems to print files in a random order, but if one runs multiple dir commands, they all print the files in the same order. This order does not appear to be based on date, size, or alphabetization. So what is the order? Does it simply print whatever files it finds first?










    share|improve this question







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      1












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      In the version of command.com included MS-DOS, dir seems to print files in a random order, but if one runs multiple dir commands, they all print the files in the same order. This order does not appear to be based on date, size, or alphabetization. So what is the order? Does it simply print whatever files it finds first?










      share|improve this question







      New contributor




      TSJNachos117 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      In the version of command.com included MS-DOS, dir seems to print files in a random order, but if one runs multiple dir commands, they all print the files in the same order. This order does not appear to be based on date, size, or alphabetization. So what is the order? Does it simply print whatever files it finds first?







      ms-dos






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      asked 3 hours ago









      TSJNachos117TSJNachos117

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          2 Answers
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          Whatever it finds first. DIR in MS-DOS command.com starts at the beginning of the directory table and reads it through to the end. The files will be in the order they were added to the directory table.






          share|improve this answer






























            1














            When a new file is created in a FAT-based file system, its entry will be placed in the first vacant directory slot, if there is one, or else the directory will be extended to add another cluster worth of vacant slots (and the new entry will be placed in the first of those). If no files are ever deleted, files will be assigned directory entries in the order of creation.



            Before the advent of long file names, each file that was deleted would result in an empty directory slot, which would get filled by the next file to be created. Long file names complicate this process because they are stored using multiple consecutive directory slots (though I don't know the exact process).



            The "dir" command in MS-DOS defaults to reporting files in the same order as their directory entries, but command-line arguments in later versions allow sorting by various criteria.






            share|improve this answer























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              2 Answers
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              2 Answers
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              3














              Whatever it finds first. DIR in MS-DOS command.com starts at the beginning of the directory table and reads it through to the end. The files will be in the order they were added to the directory table.






              share|improve this answer



























                3














                Whatever it finds first. DIR in MS-DOS command.com starts at the beginning of the directory table and reads it through to the end. The files will be in the order they were added to the directory table.






                share|improve this answer

























                  3












                  3








                  3







                  Whatever it finds first. DIR in MS-DOS command.com starts at the beginning of the directory table and reads it through to the end. The files will be in the order they were added to the directory table.






                  share|improve this answer













                  Whatever it finds first. DIR in MS-DOS command.com starts at the beginning of the directory table and reads it through to the end. The files will be in the order they were added to the directory table.







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered 3 hours ago









                  RETRACRETRAC

                  905311




                  905311





















                      1














                      When a new file is created in a FAT-based file system, its entry will be placed in the first vacant directory slot, if there is one, or else the directory will be extended to add another cluster worth of vacant slots (and the new entry will be placed in the first of those). If no files are ever deleted, files will be assigned directory entries in the order of creation.



                      Before the advent of long file names, each file that was deleted would result in an empty directory slot, which would get filled by the next file to be created. Long file names complicate this process because they are stored using multiple consecutive directory slots (though I don't know the exact process).



                      The "dir" command in MS-DOS defaults to reporting files in the same order as their directory entries, but command-line arguments in later versions allow sorting by various criteria.






                      share|improve this answer



























                        1














                        When a new file is created in a FAT-based file system, its entry will be placed in the first vacant directory slot, if there is one, or else the directory will be extended to add another cluster worth of vacant slots (and the new entry will be placed in the first of those). If no files are ever deleted, files will be assigned directory entries in the order of creation.



                        Before the advent of long file names, each file that was deleted would result in an empty directory slot, which would get filled by the next file to be created. Long file names complicate this process because they are stored using multiple consecutive directory slots (though I don't know the exact process).



                        The "dir" command in MS-DOS defaults to reporting files in the same order as their directory entries, but command-line arguments in later versions allow sorting by various criteria.






                        share|improve this answer

























                          1












                          1








                          1







                          When a new file is created in a FAT-based file system, its entry will be placed in the first vacant directory slot, if there is one, or else the directory will be extended to add another cluster worth of vacant slots (and the new entry will be placed in the first of those). If no files are ever deleted, files will be assigned directory entries in the order of creation.



                          Before the advent of long file names, each file that was deleted would result in an empty directory slot, which would get filled by the next file to be created. Long file names complicate this process because they are stored using multiple consecutive directory slots (though I don't know the exact process).



                          The "dir" command in MS-DOS defaults to reporting files in the same order as their directory entries, but command-line arguments in later versions allow sorting by various criteria.






                          share|improve this answer













                          When a new file is created in a FAT-based file system, its entry will be placed in the first vacant directory slot, if there is one, or else the directory will be extended to add another cluster worth of vacant slots (and the new entry will be placed in the first of those). If no files are ever deleted, files will be assigned directory entries in the order of creation.



                          Before the advent of long file names, each file that was deleted would result in an empty directory slot, which would get filled by the next file to be created. Long file names complicate this process because they are stored using multiple consecutive directory slots (though I don't know the exact process).



                          The "dir" command in MS-DOS defaults to reporting files in the same order as their directory entries, but command-line arguments in later versions allow sorting by various criteria.







                          share|improve this answer












                          share|improve this answer



                          share|improve this answer










                          answered 56 mins ago









                          supercatsupercat

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