/usr/ccs/bin/vc [options] [keyword=value ...]"Version control." Copy lines from standard input to standard output under control of the vc keywords and arguments within the standard input.
This command is completely unrelated to RCS and to SCCS; it is essentially useless.
-aReplace control keywords in all lines, including text lines.
-ckUse k instead of : as the control character.
-sSuppress warning messages.
-tIf any control characters are found before the first tab in the file, remove all characters up to the first tab.