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nl is part of the X/Open Portability Guide since issue 2 of 1987. It was inherited into the first version of POSIX.1 and the Single Unix Specification. [1] It first appeared in System V release 2. [2] The version of nl bundled in GNU coreutils was written by Scott Bartram and David MacKenzie. [3]
CS—Computer Science; CSE—Computer science and engineering; ... EUC—Extended Unix Code; EULA—End User License Agreement; EWMH—Extended Window Manager Hints;
In addition, he wrote the ‘Source Code and Commentary on Unix Level 6’ and handed cardboard bound copies on computer printout paper to his astonished students. Containing the entire UNIX 6 operating system, the book proved an invaluable teaching resource and a technical bible for a whole generation of professionals.
NL is a generalization of L, the class for logspace problems on a deterministic Turing machine. Since any deterministic Turing machine is also a nondeterministic Turing machine, we have that L is contained in NL. NL can be formally defined in terms of the computational resource nondeterministic space (or NSPACE) as NL = NSPACE(log n).
For example, one might build an LDAP directory using source data from a student administration system. The student system could provide an attribute degreeCode, which might be a numeric code identifying the degree program in which the student is enrolled. Suppose then that degreeCode 55 is Bachelor of Computer Science. We could then define a ...
In computer science, the syntax of a computer language is the rules that define the combinations of symbols that are considered to be correctly structured statements or expressions in that language. This applies both to programming languages, where the document represents source code, and to markup languages, where the document represents data.
In computer programming, machine code is computer code consisting of machine language instructions, which are used to control a computer's central processing unit (CPU). For conventional binary computers , machine code is the binary representation of a computer program which is actually read and interpreted by the computer.
Computer programming or coding is the composition of sequences of instructions, called programs, that computers can follow to perform tasks. It involves designing and implementing algorithms, step-by-step specifications of procedures, by writing code in one or more programming languages.