"In place." The input file will be
rewritten with the added comments. This argument requires write permission
to the directory containing infile, but does not require write permission
for infile. Of the special file name cases described in urt(1)
, only compressed
files may be updated in place. (It doesn't make sense to update the output
of a pipe "in place", does it?)
If -o outfile is specified together with
-i, then outfile will not be modified until rleaddcom has finished (this
is similar to the way that into(1)
works).