interj. 1. The canonical minimal test message in the
C/UNIX universe. 2. Any of the minimal programs that emit this
message. Traditionally, the first program a C coder is supposed to
write in a new environment is one that just prints "hello, world"
to standard output (and indeed it is the first example program
). Environments that generate an unreasonably large
executable for this trivial test or which require a hairy
compiler-linker invocation to generate it are considered to
). 3. Greeting uttered by a hacker making an
entrance or requesting information from anyone present. "Hello,
world! Is the VAX
back up yet?"