MAN PAGES: DIFF COMMAND
Compare line by line.
report only when
two are the same
output lines
of unified context
in two columns
show
each change
show the most recent
matching
expand spaces
make line up
recursively follow
symbolic links
treat absent as empty
ignore differences
ignore changes
due to expansion
ignore end
try hard
assume many scattered
‘never’, ‘always’
if trouble
access
the complete manual.
—
Found poem (erasure) from the Linux Man Pages. Complete text here:
https://man7.org/linux/man-pages/man1/diff.1.html
AUTHOR
Written by Paul Eggert, Mike Haertel, David Hayes, Richard Stallman,
and Len Tower.