what is the command that word wraps and justifies a text file so that the output looks like that of a man page:
All of these system calls are used to wait for state
changes in a child of the calling process, and obtain
information about the child whose state has changed. A
state change is considered to be: the child terminated; the
child was stopped by a signal; or the child was resumed by
a signal. In the case of a terminated child, performing a
wait allows the system to release the resources associated
with the child; if a wait is not performed, then the termi-
nated child remains in a "zombie" state (see NOTES below).
Best Answer
That would be GROFF.
(Older Unix version use NROFF or TROFF, but they are all different programs in the same family.)
Please note that it is not a simple command that operates on a text-file. It requires formatting instructions to be inserted in the text.
In fact it operates much more like a compiler.
If you are familiar with TeX or LaTeX than you know the principle, but the various ROFF style programms have a much simpler command language.