nRedirect
output to a log file via log= option.
ulogs
dt’s command line at top of log.
nLog
files are opened in append mode.
nBeware: No mounted file system checks!
nTru64 Unix
& Solaris, skip first 8K to avoid overwriting the disk label (position=8k).
nSuccess
exit status is zero (0).
nGeneral
failure exit status is 255.
nEnd
of file/media exit status is 254.
nSignals
cause non-zero exit status too.