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(-)gnu/usr.bin/diff/diff.1 (+4 lines)
Lines 474-479 Link Here
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.TP
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.TP
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.B \-y
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.B \-y
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Use the side by side output format.
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Use the side by side output format.
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.SH RETURN VALUE
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.I diff
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returns a 0 if the files are identical or a 1 if the files differ. If one or
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both of the files cannot be opened, then the return value is set to 2.
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.SH ENVIRONMENT
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.SH ENVIRONMENT
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The environment variable
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The environment variable
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.B DIFF_OPTIONS
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.B DIFF_OPTIONS

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