Step 4 Click the Run button.
Using Diff - Command Line Options
diff [ -rebidtvo? ] [-O <colors>] oldfile newfile
If diff is given two directories, it will diff each of the files in those directories.
If diff is given two binary files, it will compare them and issue a report if they are different.
If diff is given the -r option, it will recursively diff each of the files in each subdirectory.
If diff is given the -e option, it will output a script suitable for feeding into EDLIN to update
oldfile to create newfile.
Otherwise, diff outputs lines of the form:
n1 a n3,n4
n1,n2 d n3
n1,n2 c n3,n4
where 'a' means: add lines n3 thru n4 from newfile at location n1 in newfile; 'd' means: delete
lines n1 thru n2 from newfile, next line is n3 in newfile; and 'c' means: change lines n1 thru n2
in newfile to lines n3 thru n4 in newfile Identical pairs where n1=n2 or n3=n4 are abbreviated
as a single number. Following each of the [adc] lines comes each of the lines effected. Lines
preceded by '<' are from oldfile, those preceded by '>' are from newfile.
The options for Diff are:
-b: Ignore trailing whitespace and treat sequences of embedded whitespace as being equal.
-i: Ignore leading whitespace.
-d: Treat files as if they were binary, only reporting if they are different.
-t: Treat files as if they were text, even if default autodetection claims they are binary.
-v: Report on each file that it processes, not just the ones with differences.
-o: Colorize output with the default colors (black, white, light cyan, and yellow), just as '-O
0fbe' would.
-O <colors>: Colorize output with the specified single-character hex colors: background, normal
text, old text, and new text. The colors are: black = 0, blue = 1, green = 2, cyan = 3, red = 4,
magenta = 5, brown = 6, lightgray = 7, darkgray = 8, lightblue = 9, lightgreen = A, lightcyan =
B, lightred = C, lightmagenta = D, yellow = E, white = F.
-?: Display program description.
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Chapter 14: Using 3rd Party Common Tools
diff