People for Bikes supports
bicycling. They are halfway to collecting a million signatures, as
part of preparing to lobby congress, etc. The page allows for both
signing their petition & spreading the word to your friends, etc.
The Unix "cut" utility is useful. The delimiter( -d" ") is
frequently a single space. Some inputs, such as an ls -l result,
have a varying number of spaces separating fields. Converting all
occurrences of consecutive spaces to one space is a convenient
solution, using program 1sp.c.
Downloading files from Web Sites, etc, often means receiving Unix
ASCII files. They differ from MS-DOS ASCII files.