Some tools didn't use argv0 for tool name, or usage() at all.
@@ -992,7 +992,7 @@ find(char *path, struct findhist *hist)
static void
usage(void)
{
eprintf("usage: %s [-H|-L] path... [expression...]\n", argv0);
eprintf("usage: %s [-H | -L] path ... [expression ...]\n", argv0);
}
int
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