what posix stands for

Signed-off-by: Mattias Andrée <maandree@operamail.com>
command line arguments

Signed-off-by: Mattias Andrée <maandree@operamail.com>
typo

Signed-off-by: Mattias Andrée <maandree@operamail.com>
command line options

Signed-off-by: Mattias Andrée <maandree@operamail.com>
alternative options

Signed-off-by: Mattias Andrée <maandree@operamail.com>
typo

Signed-off-by: Mattias Andrée <maandree@operamail.com>
typo

Signed-off-by: Mattias Andrée <maandree@operamail.com>