hello world 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 in
K&R). 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 lose (see X). 3.
Greeting uttered by a hacker making an entrance or requesting
information from anyone present. "Hello, world! Is the LAN back
up yet?"