" I also noticed which i couldn't redirect STDERR devoid of also redirecting STDOUT. The answer the place programA sends STDOUT to STDIN of programB, then redirects STDERR to a log file: programA two> /var/log/programA.log AkeoAkeo 20611 silver badge44 bronze badges Insert a comment intr = ^C; Stop = ^; https://erasmusa109man4.ourabilitywiki.com/user