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Full Discussion: can unix run on a pc? war.
Top Forums UNIX for Dummies Questions & Answers can unix run on a pc? war. Post 5449 by LivinFree on Wednesday 15th of August 2001 01:24:33 AM
Old 08-15-2001

Unix as an operating system does not exist. As Neo states so well, it's an architectural design - a style. Linux, Solaris, HP-UX, BSD, SCO... they're all "Unix". And yes, you can run different 'types' of Unix on the same machine.

Also, the "original" UNIX was slow, cumbersome (you had to reboot the system before you could use a newly created directory), and underdeveloped. That was in 1969. Now, the various Unices comprise a giant chunk of the world's high-end servers, and is even making headway in the desktop world. It has become one of the most advanced, powerful, flexible, and stable operating system in the world.

P.S. - The first development efforts at Bell Labs in 1969 were on a PDP-7 computer... far from 64-bit. It had an 18 bit word space. Wierd, wild stuff, man!
 

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RARENTRY(3)								 1							       RARENTRY(3)

The RarEntry class

INTRODUCTION
A RAR entry, representing a directory or a compressed file inside a RAR archive. CLASS SYNOPSIS
RarEntry final RarEntry Constants o const integer$RarEntry::HOST_MSDOS0 o const integer$RarEntry::HOST_OS21 o const integer$RarEntry::HOST_WIN322 o const integer$RarEntry::HOST_UNIX3 o const integer$RarEntry::HOST_MACOS4 o const integer$RarEntry::HOST_BEOS5 o const integer$RarEntry::ATTRIBUTE_WIN_READONLY1 o const integer$RarEntry::ATTRIBUTE_WIN_HIDDEN2 o const integer$RarEntry::ATTRIBUTE_WIN_SYSTEM4 o const integer$RarEntry::ATTRIBUTE_WIN_DIRECTORY16 o const integer$RarEntry::ATTRIBUTE_WIN_ARCHIVE32 o const integer$RarEntry::ATTRIBUTE_WIN_DEVICE64 o const integer$RarEntry::ATTRIBUTE_WIN_NORMAL128 o const integer$RarEntry::ATTRIBUTE_WIN_TEMPORARY256 o const integer$RarEntry::ATTRIBUTE_WIN_SPARSE_FILE512 o const integer$RarEntry::ATTRIBUTE_WIN_REPARSE_POINT1024 o const integer$RarEntry::ATTRIBUTE_WIN_COMPRESSED2048 o const integer$RarEntry::ATTRIBUTE_WIN_OFFLINE4096 o const integer$RarEntry::ATTRIBUTE_WIN_NOT_CONTENT_INDEXED8192 o const integer$RarEntry::ATTRIBUTE_WIN_ENCRYPTED16384 o const integer$RarEntry::ATTRIBUTE_WIN_VIRTUAL65536 o const integer$RarEntry::ATTRIBUTE_UNIX_WORLD_EXECUTE1 o const integer$RarEntry::ATTRIBUTE_UNIX_WORLD_WRITE2 o const integer$RarEntry::ATTRIBUTE_UNIX_WORLD_READ4 o const integer$RarEntry::ATTRIBUTE_UNIX_GROUP_EXECUTE8 o const integer$RarEntry::ATTRIBUTE_UNIX_GROUP_WRITE16 o const integer$RarEntry::ATTRIBUTE_UNIX_GROUP_READ32 o const integer$RarEntry::ATTRIBUTE_UNIX_OWNER_EXECUTE64 o const integer$RarEntry::ATTRIBUTE_UNIX_OWNER_WRITE128 o const integer$RarEntry::ATTRIBUTE_UNIX_OWNER_READ256 o const integer$RarEntry::ATTRIBUTE_UNIX_STICKY512 o const integer$RarEntry::ATTRIBUTE_UNIX_SETGID1024 o const integer$RarEntry::ATTRIBUTE_UNIX_SETUID2048 o const integer$RarEntry::ATTRIBUTE_UNIX_FINAL_QUARTET61440 o const integer$RarEntry::ATTRIBUTE_UNIX_FIFO4096 o const integer$RarEntry::ATTRIBUTE_UNIX_CHAR_DEV8192 o const integer$RarEntry::ATTRIBUTE_UNIX_DIRECTORY16384 o const integer$RarEntry::ATTRIBUTE_UNIX_BLOCK_DEV24576 o const integer$RarEntry::ATTRIBUTE_UNIX_REGULAR_FILE32768 o const integer$RarEntry::ATTRIBUTE_UNIX_SYM_LINK40960 o const integer$RarEntry::ATTRIBUTE_UNIX_SOCKET49152 Methods o public bool RarEntry::extract (string $dir, [string $filepath = ""], [string $password = NULL], [bool $extended_data = false]) o public int RarEntry::getAttr (void ) o public string RarEntry::getCrc (void ) o public string RarEntry::getFileTime (void ) o public int RarEntry::getHostOs (void ) o public int RarEntry::getMethod (void ) o public string RarEntry::getName (void ) o public int RarEntry::getPackedSize (void ) o public resource RarEntry::getStream ([string $password]) o public int RarEntry::getUnpackedSize (void ) o public int RarEntry::getVersion (void ) o public bool RarEntry::isDirectory (void ) o public bool RarEntry::isEncrypted (void ) o public string RarEntry::__toString (void ) PREDEFINED CONSTANTS
o RarEntry::HOST_MSDOS -If the return value of RarEntry::getHostOs equals this constant, MS-DOS was used to add this entry. Use instead of RAR_HOST_MSDOS. o RarEntry::HOST_OS2 -If the return value of RarEntry::getHostOs equals this constant, OS/2 was used to add this entry. Intended to replace RAR_HOST_OS2. o RarEntry::HOST_WIN32 -If the return value of RarEntry::getHostOs equals this constant, Microsoft Windows was used to add this entry. Intended to replace RAR_HOST_WIN32. o RarEntry::HOST_UNIX -If the return value of RarEntry::getHostOs equals this constant, an unspecified UNIX OS was used to add this entry. Intended to replace RAR_HOST_UNIX. o RarEntry::HOST_MACOS -If the return value of RarEntry::getHostOs equals this constant, Mac OS was used to add this entry. o RarEntry::HOST_BEOS -If the return value of RarEntry::getHostOs equals this constant, BeOS was used to add this entry. Intended to replace RAR_HOST_BEOS. o RarEntry::ATTRIBUTE_WIN_READONLY -Bit that represents a Windows entry with a read-only attribute. To be used with RarEn- try::getAttr on entries whose host OS is Microsoft Windows. o RarEntry::ATTRIBUTE_WIN_HIDDEN -Bit that represents a Windows entry with a hidden attribute. To be used with RarEntry::getAttr on entries whose host OS is Microsoft Windows. o RarEntry::ATTRIBUTE_WIN_SYSTEM -Bit that represents a Windows entry with a system attribute. To be used with RarEntry::getAttr on entries whose host OS is Microsoft Windows. o RarEntry::ATTRIBUTE_WIN_DIRECTORY -Bit that represents a Windows entry with a directory attribute (entry is a directory). To be used with RarEntry::getAttr on entries whose host OS is Microsoft Windows. See also RarEntry::isDirectory, which also works with entries that were not added in WinRAR. o RarEntry::ATTRIBUTE_WIN_ARCHIVE -Bit that represents a Windows entry with an archive attribute. To be used with RarEntry::getAttr on entries whose host OS is Microsoft Windows. o RarEntry::ATTRIBUTE_WIN_DEVICE -Bit that represents a Windows entry with a device attribute. To be used with RarEntry::getAttr on entries whose host OS is Microsoft Windows. o RarEntry::ATTRIBUTE_WIN_NORMAL -Bit that represents a Windows entry with a normal file attribute (entry is NOT a directory). To be used with RarEntry::getAttr on entries whose host OS is Microsoft Windows. See also RarEntry::isDirectory, which also works with entries that were not added in WinRAR. o RarEntry::ATTRIBUTE_WIN_TEMPORARY -Bit that represents a Windows entry with a temporary attribute. To be used with RarEn- try::getAttr on entries whose host OS is Microsoft Windows. o RarEntry::ATTRIBUTE_WIN_SPARSE_FILE -Bit that represents a Windows entry with a sparse file attribute (file is an NTFS sparse file). To be used with RarEntry::getAttr on entries whose host OS is Microsoft Windows. o RarEntry::ATTRIBUTE_WIN_REPARSE_POINT -Bit that represents a Windows entry with a reparse point attribute (entry is an NTFS reparse point, e.g. a directory junction or a mount file system). To be used with RarEntry::getAttr on entries whose host OS is Microsoft Windows. o RarEntry::ATTRIBUTE_WIN_COMPRESSED -Bit that represents a Windows entry with a compressed attribute (NTFS only). To be used with RarEntry::getAttr on entries whose host OS is Microsoft Windows. o RarEntry::ATTRIBUTE_WIN_OFFLINE -Bit that represents a Windows entry with an offline attribute (entry is offline and not accessi- ble). To be used with RarEntry::getAttr on entries whose host OS is Microsoft Windows. o RarEntry::ATTRIBUTE_WIN_NOT_CONTENT_INDEXED -Bit that represents a Windows entry with a not content indexed attribute (entry is to be indexed). To be used with RarEntry::getAttr on entries whose host OS is Microsoft Windows. o RarEntry::ATTRIBUTE_WIN_ENCRYPTED -Bit that represents a Windows entry with an encrypted attribute (NTFS only). To be used with RarEntry::getAttr on entries whose host OS is Microsoft Windows. o RarEntry::ATTRIBUTE_WIN_VIRTUAL -Bit that represents a Windows entry with a virtual attribute. To be used with RarEntry::getAttr on entries whose host OS is Microsoft Windows. o RarEntry::ATTRIBUTE_UNIX_WORLD_EXECUTE -Bit that represents a UNIX entry that is world executable. To be used with RarEn- try::getAttr on entries whose host OS is UNIX. o RarEntry::ATTRIBUTE_UNIX_WORLD_WRITE -Bit that represents a UNIX entry that is world writable. To be used with RarEntry::getAttr on entries whose host OS is UNIX. o RarEntry::ATTRIBUTE_UNIX_WORLD_READ -Bit that represents a UNIX entry that is world readable. To be used with RarEntry::getAttr on entries whose host OS is UNIX. o RarEntry::ATTRIBUTE_UNIX_GROUP_EXECUTE -Bit that represents a UNIX entry that is group executable. To be used with RarEn- try::getAttr on entries whose host OS is UNIX. o RarEntry::ATTRIBUTE_UNIX_GROUP_WRITE -Bit that represents a UNIX entry that is group writable. To be used with RarEntry::getAttr on entries whose host OS is UNIX. o RarEntry::ATTRIBUTE_UNIX_GROUP_READ -Bit that represents a UNIX entry that is group readable. To be used with RarEntry::getAttr on entries whose host OS is UNIX. o RarEntry::ATTRIBUTE_UNIX_OWNER_EXECUTE -Bit that represents a UNIX entry that is owner executable. To be used with RarEn- try::getAttr on entries whose host OS is UNIX. o RarEntry::ATTRIBUTE_UNIX_OWNER_WRITE -Bit that represents a UNIX entry that is owner writable. To be used with RarEntry::getAttr on entries whose host OS is UNIX. o RarEntry::ATTRIBUTE_UNIX_OWNER_READ -Bit that represents a UNIX entry that is owner readable. To be used with RarEntry::getAttr on entries whose host OS is UNIX. o RarEntry::ATTRIBUTE_UNIX_STICKY -Bit that represents the UNIX sticky bit. To be used with RarEntry::getAttr on entries whose host OS is UNIX. o RarEntry::ATTRIBUTE_UNIX_SETGID -Bit that represents the UNIX setgid attribute. To be used with RarEntry::getAttr on entries whose host OS is UNIX. o RarEntry::ATTRIBUTE_UNIX_SETUID -Bit that represents the UNIX setuid attribute. To be used with RarEntry::getAttr on entries whose host OS is UNIX. o RarEntry::ATTRIBUTE_UNIX_FINAL_QUARTET -Mask to isolate the last four bits (nibble) of UNIX attributes (_S_IFMT, the type of file mask). To be used with RarEntry::getAttr on entries whose host OS is UNIX and with the constants RarEntry::ATTRIBUTE_UNIX_FIFO, RarEntry::ATTRIBUTE_UNIX_CHAR_DEV, RarEntry::ATTRIBUTE_UNIX_DIRECTORY, RarEntry::ATTRIBUTE_UNIX_BLOCK_DEV, RarEn- try::ATTRIBUTE_UNIX_REGULAR_FILE, RarEntry::ATTRIBUTE_UNIX_SYM_LINK and RarEntry::ATTRIBUTE_UNIX_SOCKET. o RarEntry::ATTRIBUTE_UNIX_FIFO -Unix FIFOs will have attributes whose last four bits have this value. To be used with RarEn- try::getAttr on entries whose host OS is UNIX and with the constant RarEntry::ATTRIBUTE_UNIX_FINAL_QUARTET. o RarEntry::ATTRIBUTE_UNIX_CHAR_DEV -Unix character devices will have attributes whose last four bits have this value. To be used with RarEntry::getAttr on entries whose host OS is UNIX and with the constant RarEntry::ATTRIBUTE_UNIX_FINAL_QUARTET. o RarEntry::ATTRIBUTE_UNIX_DIRECTORY -Unix directories will have attributes whose last four bits have this value. To be used with RarEntry::getAttr on entries whose host OS is UNIX and with the constant RarEntry::ATTRIBUTE_UNIX_FINAL_QUARTET. See also RarEn- try::isDirectory, which also works with entries that were added in other operating systems. o RarEntry::ATTRIBUTE_UNIX_BLOCK_DEV -Unix block devices will have attributes whose last four bits have this value. To be used with RarEntry::getAttr on entries whose host OS is UNIX and with the constant RarEntry::ATTRIBUTE_UNIX_FINAL_QUARTET. o RarEntry::ATTRIBUTE_UNIX_REGULAR_FILE -Unix regular files (not directories) will have attributes whose last four bits have this value. To be used with RarEntry::getAttr on entries whose host OS is UNIX and with the constant RarEn- try::ATTRIBUTE_UNIX_FINAL_QUARTET. See also RarEntry::isDirectory, which also works with entries that were added in other operat- ing systems. o RarEntry::ATTRIBUTE_UNIX_SYM_LINK -Unix symbolic links will have attributes whose last four bits have this value. To be used with RarEntry::getAttr on entries whose host OS is UNIX and with the constant RarEntry::ATTRIBUTE_UNIX_FINAL_QUARTET. o RarEntry::ATTRIBUTE_UNIX_SOCKET -Unix sockets will have attributes whose last four bits have this value. To be used with RarEn- try::getAttr on entries whose host OS is UNIX and with the constant RarEntry::ATTRIBUTE_UNIX_FINAL_QUARTET. PHP Documentation Group RARENTRY(3)
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