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This is a list of POSIX (Portable Operating System Interface) commands as specified by IEEE Std 1003.1-2024, which is part of the Single UNIX Specification (SUS). These commands can be found on Unix operating systems and most Unix-like operating systems.
A more elaborate solution, usage based pricing, is suggested in the literature, but on its own it does not solve the congestion problem in the busy hours. One step further in UIL, a fully dynamic usage-based pricing is suggested. [3] This dynamic price is displayed on a user terminal (UT) so that user can decide to use or not to use the service.
Many early versions of Unix and Plan 9 did not have this command, and documentation and books used sed instead: sed 5q filename. The example prints every line (implicit) and quits after the fifth. Equivalently, awk may be used to print the first five lines in a file: awk 'NR < 6' filename
R is a programming language for statistical computing and data visualization.It has been adopted in the fields of data mining, bioinformatics and data analysis. [9]The core R language is augmented by a large number of extension packages, containing reusable code, documentation, and sample data.
We use $ as a special terminal indicating end of input stream, and S as start symbol. Computing the Follow-sets for the nonterminals in a grammar can be done as follows: initialize Fo(S) with { $} and every other Fo(A i) with the empty set; if there is a rule of the form A j → wA i w' , then if the terminal a is in Fi(w' ), then add a to Fo(A i)