Comandos de la terminal/sync

[rrc@Llawyr ~]$ sync --help
Usage: sync [OPTION]
Force changed blocks to disk, update the super block.

      --help     display this help and exit
      --version  output version information and exit

Report sync bugs to bug-coreutils@gnu.org
GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
General help using GNU software: <http://www.gnu.org/gethelp/>
For complete documentation, run: info coreutils 'sync invocation'

[rrc@Llawyr ~]$ sync --version
sync (coreutils) 8.21
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Jim Meyering.