Greg Wooledge <wool...@eeg.ccf.org> writes: > On Mon, Jul 27, 2020 at 07:42:31PM +0000, Rodolfo Medina wrote: >> Must be so because >> >> $ zgrep "2018.*.install " /var/log/dpkg* >> >> gives no output and so with 2017, 2016 and 2015, whereas for 2019 and 2020 >> there is output... > > You can use ls -l to see the datestamps on the files. > > You can zcat the oldest one, and pipe that through head, to see the > oldest entries in the oldest file. That'll tell you where your cutoff > point is, more precisely than the datestamps (which will tell you the > end of each individual file, but not the beginning).
Yes, thanks... So turns it out to be only just May 2019 the cutoff point... rodolfo