IRAF help page for package lists, program unique

from NOAO unique -- remove repeated adjacent lines from a fileUSAGEPARAMETERSDESCRIPTIONEXAMPLESSEE ALSO

unique -- remove repeated adjacent lines from a file

USAGE

unique files

PARAMETERS

files

List of files to be processed.

DESCRIPTION

Task unique reads the input comparing adjacent lines. The second and successive copies of a line are removed; the remainder is passed on to the standard output.

EXAMPLES

Remove repeated names from a list. Note the input file has been sorted alphabetically so repeated names are adjacent.

cl> sort names | unique > names.final

SEE ALSO

sort,

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