Document the -d option and slightly change the wording of the page. Signed-off-by: Silvan Jegen <s.jegen@gmail.com>
*sum tools: -c was added tr: -d flag was added. xargs: -n flag was added. cmp: minor typo (change to lowercase). Signed-off-by: Hiltjo Posthuma <hiltjo@codemadness.org>