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man7.org /linux /man-pages /man1 /uniq.1.html uniq is a utility command on Unix , Plan 9 , Inferno , and Unix-like operating systems which, when fed a text file or standard input , outputs the text with adjacent identical lines collapsed to one, unique line of text.
Line, word and byte or character count Version 1 AT&T UNIX what: SCCS: Optional (XSI) Identify SCCS files PWB UNIX who: System administration Optional (XSI) Display who is on the system Version 1 AT&T UNIX write: Misc Mandatory Write to another user's terminal Version 1 AT&T UNIX xargs: Shell programming Mandatory Construct argument lists and ...
--unique: Unique processing to suppress all but one in each set of lines having equal keys. No Yes No Yes Yes No Yes -V,--version-sort: Natural sort of (version) numbers within text No No No Yes Yes No No -w: Like -i, but ignore only tabs and spaces. No Yes No No No No No -z,--zero-terminated: End lines with 0 byte, not newline No No No Yes Yes ...
stat command line. stat() is a Unix system call that returns file attributes about an inode.The semantics of stat() vary between operating systems.As an example, Unix command ls uses this system call to retrieve information on files that includes:
Each machine code instruction causes the CPU to perform a specific task. Examples of such tasks include: Load a word from memory to a CPU register; Execute an arithmetic logic unit (ALU) operation on one or more registers or memory locations; Jump or skip to an instruction that is not the next one
In computer science, the count-distinct problem [1] (also known in applied mathematics as the cardinality estimation problem) is the problem of finding the number of distinct elements in a data stream with repeated elements. This is a well-known problem with numerous applications.
wc (short for word count) is a command in Unix, Plan 9, Inferno, and Unix-like operating systems.The program reads either standard input or a list of computer files and generates one or more of the following statistics: newline count, word count, and byte count.
The above dyadic functions examples [left and right examples] (using the same / symbol, right example) demonstrate how Boolean values (0s and 1s) can be used as left arguments for the \ expand and / replicate functions to produce exactly opposite results.