Compare the differences between and optionally merge 2 files.

# To compare 2 files:
sdiff <path/to/file1> <path/to/file2>

# To compare 2 files, ignoring all tabs and whitespace:
sdiff -W <path/to/file1> <path/to/file2>

# To compare 2 files, ignoring whitespace at the end of lines:
sdiff -Z <path/to/file1> <path/to/file2>

# To compare 2 files in a case-insensitive manner:
sdiff -i <path/to/file1> <path/to/file2>

# To compare and then merge, writing the output to a new file:
sdiff -o <path/to/merged_file> <path/to/file1> <path/to/file2>