/dev/zero

/dev/zero is a special file in Unix-like operating systems that provides as many null characters (ASCII NUL, 0x00) as are read from it. One of the typical uses is to provide a character stream for initializing data storage.

Function

Read operations from /dev/zero return as many null characters (0x00) as requested in the read operation.

Unlike /dev/null, /dev/zero may be used as a source, not only as a sink for data. All write operations to /dev/zero succeed with no other effects. However, /dev/null is more commonly used for this purpose.

When /dev/zero is memory-mapped, e.g., with mmap, to the virtual address space, it is equivalent to using anonymous memory; i.e. memory not connected to any file.

History

/dev/zero was introduced in 1988 by SunOS-4.0 in order to allow a mappable BSS segment for shared libraries using anonymous memory. In the mid 1990s, HP-UX introduced the mmap() flag MAP_ANONYMOUS that maps anonymous memory directly without a need to open /dev/zero. Since the late 1990s, MAP_ANONYMOUS is supported by most UNIX versions, removing the original purpose of /dev/zero.

Numeral (linguistics)

In linguistics, a numeral is a member of a word class (or sometimes even a part of speech) designating numbers, such as the English word 'two' and the compound 'seventy-seven'.

Identifying numerals

Numerals may be attributive, as in two dogs, or pronominal, as in I saw two (of them).

Many words of different parts of speech indicate number or quantity. Quantifiers do not enumerate, or designate a specific number, but give another, often less specific, indication of amount. Examples are words such as every, most, least, some, etc. There are also number words which enumerate but are not a distinct part of speech, such as 'dozen', which is a noun, 'first', which is an adjective, or 'twice', which is an adverb. Numerals enumerate, but in addition have distinct grammatical behavior: when a numeral modifies a noun, it may replace the article: the/some dogs played in the park → twelve dogs played in the park. (Note that *dozen dogs played in the park is not grammatical, so 'dozen' is not a numeral.)

Zero (name)

Zero or Zéro is surname, given name or pseudonym of the following people:

Zero is name of the following notable fictional characters:

Zero (B'z song)

Zero is the eleventh single by B'z, released on October 7, 1992, and the only one from their album Run. This song is one of B'z many number-one singles in Oricon chart, selling over 600,000 copies in its first week, although there was no tie up for the song at that moment. The single was re-released in 2003, and re-entered at #4. It sold over 1,310,000 copies according to Oricon.

Track listing

References

External links

Device file

In Unix-like operating systems, a device file or special file is an interface for a device driver that appears in a file system as if it were an ordinary file. There are also special files in MS-DOS, OS/2, and Microsoft Windows. They allow software to interact with a device driver using standard input/output system calls, which simplifies many tasks and unifies user-space I/O mechanisms.

Device files often provide simple interfaces to peripheral devices, such as printers and serial ports. But they can also be used to access specific resources on those devices, such as disk partitions. Finally, device files are useful for accessing system resources that have no connection with any actual device such as data sinks and random number generators.

MS-DOS borrowed the concept of special files from Unix, but renamed them devices. Because early versions of MS-DOS did not support a directory hierarchy, devices were distinguished from regular files by making their names reserved words. This means that certain file names were reserved for devices, and should not be used to name new files or directories. The reserved names themselves were chosen to be compatible with "special files" handling of PIP command in CP/M. There were two kinds of devices in MS-DOS: Block Devices (used for disk drives) and Character Devices (generally all other devices, including COM and PRN devices). PIPE, MAILSLOT, and MUP are other standard Windows devices.

Dev (film)

Dev (Hindi: देव) is a 2004 Hindi drama film, directed by Govind Nihalani. The film won the Filmfare Critics Award for Best Movie, and Kareena Kapoor won the Filmfare Critics Award for Best Actress for her performance.

Plot

Joint Commissioner of Police Dev Pratap Singh, a duty-bound, self-righteous officer, and Special Commissioner Tejinder Khosla, the balancing force between the political interests of Chief Minister Bhandarker and Dev's commitment to the law, are lifelong friends, each with his own ideals. Farhaan, a law graduate, was brought up with ideals of non-violence and patriotism. Dev unwittingly gives Farhaan the wound that plunges him into rage and violence after witnessing the death of his father during a peace demonstration. Taking advantage of the situation, corrupt politician Latif sets the vulnerable young man on a path of violence and destruction that threatens to ignite the city. Aaliya is the light in Farhaan's life. Beautiful and innocent, the young woman also gets caught in extraordinary circumstances that transform her life and she dares to stand up for the truth. Dev is the saga of Dev and Tej's friendship, a bond stronger than blood ties in which Farhaan emerges as the wedge driving them apart. The story unfolds against the vitiated atmosphere of present times where innocent lives become fodder for political expediency. The spark of terrorist violence unknowingly set off by Farhaan under the aegis of the corrupt politician Latif engulfs the whole city in its flames. Tej transgresses beyond the boundaries of law in his passion to eliminate anti-national crime. Dev is faced with the spectre of the tragic human cost and a moral compulsion to act. The stakes rise beyond self-interest. Dev and Tej are set on a path of dramatic collision. Even as Dev and Farhaan's fate gets irreversibly linked, two soldiers whose allegiance may be to different causes but admiration for each other's courage and integrity brings them together.

Dev (actor)

Dev (Bengali: দেব) (born Deepak Adhikari on 25 December 1982) is an Indian film actor, producer, entertainer, singer and politician. He made his acting debut in the 2006 film Agnishapath. He is one of the biggest superstars and highest paid actors in Bengali cinema.

Recently, Dev has been hosting one of the biggest Bengali dance reality shows, Dance Bangla Dance, which was earlier hosted Mithun Chakraborty. He is now also an honorable Member of Parliament of India from the Ghatal constituency, as a candidate, from the party All India Trinamool Congress.

Biography

Dev was born in Mahisha, a small village near Keshpur, to Guru and Mousumi Adhikari. He has a sister, Deepali. His nickname is Raju. He spent his childhood living with his maternal uncle in Chandrakona; after that, he was brought up in Mumbai. He attended Purushottam High School, in Bandra, and Bharatiya Vidyapeeth University, in Pune, receiving a Diploma in Computer engineering from the latter. After receiving his diploma, Dev returned to Mumbai and started his film career as an observer on the set of Abbas-Mustan's Taarzan: The Wonder Car. He also did an acting course at the Kishore Namit Kapoor Acting Academy.