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Unix fmtThe unix fmt program reads lines of text, combiningand breaking lines so as to create anoutput file with lines as close to without exceeding72 characters long as possible. The rules for combining and breakinglines are as follows. 1. A new line may be started anywhere there is a space in the input.If a new line is started, there will be no trailing blanks at theend of the previous line or at the beginning of the new line. 2. A line break in the input may be eliminated in the output, providedit is not followed by a space or another line break. If a linebreak is eliminated, it is replaced by a space.