diff

Runs on:

QNX OS

Options:

-a

Treat all files as text.

-B

Ignore changes where the lines are all blank.

-b

Ignore changes in the amount of whitespace.

-d

Try hard to find a smaller set of changes.

-F regex

Show the most recent line matching the regular expression.

-i

Ignore case differences.

-L label

Use label instead of the filename in the unified header.

-N

Treat absent files as empty.

-q

Output only whether files differ.

-r

Recursively compare two files.

-S file

Start with file when comparing directories.

-s

Report when two files are the same.

-T

Make tabs line up by prefixing a tab when necessary.

-t

Expand tabs to spaces in the output.

-U lines

Output the number of lines of context specified by lines.

-u

Unified diff.

-w

Ignore all whitespace.

--color

Color output.

--strip-trailing-cr

Strip trailing carriage return (e.g., \r) from input lines.

--type-line-format=format

Display the specified type of line using the specified format, where type unchanged, old, or new. (format unchanged, old, and new as literals)

%L

The contents of the line, including the trailing newline.

%l

("el") The contents of the line, without the trailing newline.

%%

A literal %.

file1

The pathname of the first file to be compared.

file2

The pathname of the second file to be compared.

Description:

The diff utility reports the differences between two files.

The format variable uses printf integer escapes (e.g., %-2.4x) followed by one of the letters:

• E — F-1
• F — the first line number
• L — the last line number
• M — L+1
• N — the number of lines = L-F+1

This utility is provided as part of the toybox package. For information on how to enable it, see toybox.

Contributing author:

Rob Landley and the toybox project (see https://landley.net/toybox/).