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Invoking sdiff

The sdiff command merges two files and interactively outputs the results.

Its arguments are: sdiff -o outfile options ...from-file to-file.

This merges from-file with to-file, with output to outfile.If from-file is a directory and to-file is not, sdiff compares the file in from-filewhose file name is that of to-file, and vice versa. from-file and to-file may not both be directories.

sdiff options begin with '-', so normally from-file and to-file may not begin with '-'. However, '--' as an argument by itself treats the remaining arguments as file names even if they begin with '-'. You may not use '-' as an input file. An exit status of 0 means no differences were found, 1 means some differences were found, and 2 means trouble.

sdiff without '-o' (or '--output') produces a side-by-side difference. This usage is obsolete; use 'diff --side-by-side' instead.

See Options to sdiff.