anewer appends lines from stdin to a file if they don’t already exist in the file.
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anewer appends lines from stdin to a file if they don’t already exist in the file.
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anew is a tool for adding new lines to files, skipping duplicates. The software also outputs new lines to stdout.
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zet is a command-line utility for doing set operations on files considered as sets of lines. It’s free and open source software.
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uq is a simple, user-friendly alternative to sort | uniq. It removes duplicate lines from the output, regardless of the order.
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The semiuniq program reads over lines of input and write lines of output that are “semi-unique” by eliminating repeated lines that are close.
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runiq offers an efficient way (in both time and space) to filter duplicate entries (lines) from textual input.
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nauniq is similar to the Unix command uniq but detects repeated lines even if they are not adjacent. It’s written in Perl.
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huniq remove duplicates from the given input. Note that huniq does not sort the input, it just removes duplicates.
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