Find or create files that

a. gzip compresses by more than 80 percent.
b. gzip compresses by less than 10 percent.
c. Get larger when compressed with gzip.
d. Use ls –l to determine the sizes of the files in question. Can you charac-
terize the files in a, b, and c?

a. The gzip utility compresses most text files by more than 80 percent.
b. The gzip utility compresses most files that are already compressed, such
as jpeg files, by less than 10 percent.
c. The gzip utility expands a file that has already been compressed with gzip.
(To compress a gzipped file a second time, you must remove the .gz file-
name extension.)
d. Files with repeated information or inefficiently stored information can be
compressed the most. Files that have been compressed already store
information efficiently and can be compressed only a small amount, not
at all, or negatively (expanded).