Hi.when I work on one script my computer restarted and after i i open the script it was empty but script file size's is'nt 0kb.is there any way that I can recover it.Please help i dont have any backup.

Unless you've deactivated the feature, SED automatically makes backups of your files. Have a look at the folder sed_backups and hope that it was not overwritten already by a corrupted file.

really thank you.It exist yet.