Chapter 8 Research
Consult current literature to research file-naming conventions for four different operating systems (not including UNIX, MS-DOS, Windows, or Linux). Note the acceptable range of characters, maximum length, case sensititivty. Give exampels of both acceptable and unacceptable files names.
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8 Comments:
Comodore 64: case sensitive/case-preservation, can use any character that uses an 8-bit set, : and = are reserved characters, $ is a reserved word and number of characters depend on the drive used but most drives limit it to 16characters.
Mac OS9 : supports HFS and HFS+File system and may be up to 32 chacacters long. Mac OSX supports HFS and UFS and may be up to 255 characters long. Colon (:) is used as a separator. File names and folders may contain any characters except colon(:) and forward slash(/). File names are not case sensitive. Acceptable: MacHD:Documents:myfile, Unacceptable: MacHD:Documents/usan:myfile
DEC VAX VMS: is not case sensitive and may be up to 32 characters per component;earlier 9 per component; laterally, 255 for a file name and 32 for an extension. A full file specification includes nodename, diskname,directories, filename, extension and version in format.Acceptable: OURNODE::MYDISK:[THISDIR.THATDIRFILENAME.EXTENSION;2 Unacceptable:MYDISK:[THISDIR.THATDIRFILENAME.EXTENSION;2
Susan Cain
what she said
MVS or z/OS
When you create the terse archive, using the following naming convention allows the support tools to move the testcase automatically to the proper directories and update the PMR to indicate that the testcase is available.
xxxxx.bbb.ccc.yyy.yyy.[TRS][.CRY | .CRY64] --->
Example
34143.055.724.dump.TRS.CRY
(PMR_#.branch_office_#.country_code.dump.TRS.CRY)
Rob Jones
I agree with Susan about Mac OS9 which supports HFS and HFS+File and may be up to 32 sharacters long.
Earl M. Bobb
Amiga OS 4 supports international file names with accented characters up to 108 characters in length, and generally ignores case unless flagged to do otherwise for compatibility purposes.
Novell NetWare v3+ supports long file names.
I found it rather difficult to find more information on this for non-mainstream operating systems.
-Joshua Tryon
DEC VAX VMS
Acceptable range of characters – A-Z 0-9 $ - _
Maximum length – 255 file name & 32 extensions
Case sensitivity – insensitive
Reserved Characters – none
Acceptable – kL209_pp.dox
Unacceptable – fill\this.t!L
ISO 9660
Acceptable range of characters – A-Z 0-9 _ .
Maximum length – 255 file name
Case sensitivity – insensitive
Reserved Characters – none
Acceptable – kL209_pp.dox
Unacceptable – fill\this.t!L
MAC OS HFS
Acceptable range of characters – 8-bit set
Maximum length – 255 file name
Case sensitivity – insensitive & perservation
Reserved Characters – :
Acceptable – kL209_pp.dox
Unacceptable – fill:this.t!L
PO SIX
Acceptable range of characters – A-Z a-z 0-9 . - _
Maximum length – 14 file name
Case sensitivity – sensitive & preservation
Reserved Characters – / null
Acceptable – kL209-pp.dox
Unacceptable – fill/this.t!L
Seems like everyone found everything else, and I didn't want to copy them so I researched systems we were told specifically not to sorry Dr. P :(
Mac OS file names compatibility:
Mac OS9 supports HFS and HFS+ File system and may be up to 31 characters long.
Max OSX supports HFS+ and UFS (Unix File System) and may be up to 255 characters long.
Colon ":" is used as a directory separator.
File and folder names may use any characters except colon ":" and forward slash "/" which is used for directory separators on OS9 and OSX.
Filenames preserves case but are not case sensitive.
Windows file names compatibility:
Windows uses two different file systems: File Allocation Table (FAT) file system and New Technology File System (NTFS).
File and folder names may be up to 255 characters long on FAT file systems and 256 characters long on NTFS. Full pathnames may be up to 260 characters long.
There is a limit to the full pathnames of 260 characters long.
Backslash "\" is used as the directory separator.
File and directory names may not contain the special characters: "/\*?<>|:
Periods are allowed in file and directory names, but not as the last character. for example "letter.doc" is legal but "letterdoc." is illegal file name.
Filenames preserves case but are not case sensitive.
UNIX file names compatibility:
Unix base operating systems mostly use the UFS (Unix File System).
File and folder names may be up to 255 characters long.
Forward slash"/" is used as the directory separator.
File and directory names may not contain the special characters: space and /
Filenames preserves case and are case sensitive.
Amiga OFS - used a case-insensitive, case preservation, 8-bit set, with a maximum length of 30.
OS/2 - used an HPFS, case-insensitive, case preservation, 8-bit set, with a maximum length of 254.
Mac Os - used a HFS+, optional(case preservation, 8-bit set, with a maximum length of 255.
Commodore 64 - case-insensitive, case preservation, 8-bit set, with a maximum length of 16.
http://en.wikipedia.org/wiki/Filename
Ben Ayers
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