Universal Naming Convention: Difference between revisions
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Universal Naming Convention is a Microsoft(/IBM) standard of referring to remote network share paths, introduced as something Explorer could do around WinNT/Win95. | Universal Naming Convention is a Microsoft(/IBM) standard of referring to remote network share paths, introduced as something Explorer could do around WinNT/Win95. | ||
It amounts to: | It amounts to something like: | ||
\\<server>\<sharepoint>\<path> | \\<server>\<sharepoint>\<path> | ||
Where server can be | Where server can these days be | ||
* IPv4 address | * IPv4 address | ||
* server name | * server name | ||
* IPv6 address | * IPv6 address | ||
* (and historically a few other things{{verify}}) | |||
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https://learn.microsoft.com/en-us/dotnet/standard/io/file-path-formats#unc-paths | https://learn.microsoft.com/en-us/dotnet/standard/io/file-path-formats#unc-paths | ||
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* GUID volume name | * GUID volume name | ||
\\.\ | \\.\ | ||
: prefix will access the Win32 device namespace instead of the Win32 file namespace | : prefix will access the Win32 ''device'' namespace instead of the Win32 ''file'' namespace | ||
:: which is how you can get some things ''beyond'' a standard file API. | |||
: also used for \\.\COM56 | : also used for \\.\COM56 | ||
:: COM1..COM9 happen to work only because the filesystem API actually FORBIDS files be called that (so that it can kick you over to the device namespace?{{verify}}) | :: COM1..COM9 happen to work only because the filesystem API actually FORBIDS files be called that (so that it can kick you over to the device namespace?{{verify}}) | ||
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\\?\ | \\?\ | ||
: tells windows to ''disable'' string parsing and send the string right through the filesystem. | : tells windows to ''disable'' string parsing and send the string right through the filesystem. | ||
:: as almost a side effect, this also bypasses MAX_PATH lengths | :: as (almost) a side effect, this also bypasses MAX_PATH lengths. ...but ''that'' is the sole reason for some ''other'' uses. | ||
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https://stackoverflow.com/questions/21194530/what-does-mean-when-prepended-to-a-file-path | https://stackoverflow.com/questions/21194530/what-does-mean-when-prepended-to-a-file-path | ||
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Latest revision as of 14:09, 29 April 2024