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The zero flag is typically abbreviated Z or ZF or similar in most documentation and assembly languages. Along with a carry flag, a sign flag and an overflow flag, the zero flag is used to check the result of an arithmetic operation, including bitwise logical instructions. It is set to 1, or true, if an arithmetic result is zero, and reset ...
Z shell's configuration utility for new users Zsh with Agnoster theme running on Konsole terminal emulator. Features include: [14] Programmable command-line completion that can help the user type both options and arguments for most used commands, with out-of-the-box support for several hundred commands; Sharing of command history among all ...
According to Samuel Eliot Morison, the Z flag flown at Pearl Harbor was the actual one used at Tsushima. [7] However, the Tōgō Shrine in Tokyo claims that its Z flag is Togo's original, having been stored in England from 1911 to 2005. [12] [better source needed] From 1905 to 1945, the Z flag was used as an unofficial naval ensign.
The current Linux manual pages for su define it as "substitute user", [9] making the correct meaning of sudo "substitute user, do", because sudo can run a command as other users as well. [10] [11] Unlike the similar command su, users must, by default, supply their own password for authentication, rather than the password of the target user.
The terminal interface provided by Unix 32V and Seventh Edition Unix, and also presented by BSD version 4 as the old terminal driver, was a simple one, largely geared towards teletypewriters as terminals. Input was entered a line at a time, with the terminal driver in the operating system (and not the terminals themselves) providing simple line ...
While Bash was developed for UNIX and UNIX-like operating systems, such as GNU/Linux, [14] it is also available on Android, macOS, Windows, and numerous other current and historical operating systems. "Although there have been attempts to create specialized shells, the Bourne shell derivatives continue to be the primary shells in use."
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The flags can be utilized in subsequent operations, such as in processing conditional jump instructions. For example a je (Jump if Equal) instruction in the x86 assembly language will result in a jump if the Z (zero) flag was set by some previous operation. A command line switch is also referred to as a flag.