Use o sinal -F
para o final (supondo que você tenha tail
do GNU coreutils):
tail -F file-that-does-not-exist
De man tail
:
-F same as --follow=name --retry
--retry
keep trying to open a file even when it is or becomes inaccessi‐
ble; useful when following by name, i.e., with --follow=name
-f, --follow[={name|descriptor}]
output appended data as the file grows; -f, --follow, and --fol‐
low=descriptor are equivalent