For RedHat 9
$ redhat-config-date (except this requires X)
or
$ clock
$ rm /etc/localtime
$ ln -s /usr/share/zoneinfo/Australia/Brisbane /etc/localtime
$ /usr/bin/rdate -s time.nist.gov
$ /sbin/hwclock –systohc
The last two commands can be added to cron for regular syncing with running ntp
0,30 * * * * /usr/bin/rdate -s time.nist.gov >/dev/null 2>&1
1,31 * * * * /sbin/hwclock –systohc >/dev/null 2>&1
Let’s say you’re building a reference table from source data, e.g. a silver medallion table from a primary source. In this example I am using a file of random locations on the globe extracted from OpenStreetMap (OSM) as my primary source.
Read moreClean data is one of those terms everyone uses and few define precisely. Row counts match? No nulls in key columns? Values within expected ranges? All useful checks — and all insufficient once you move from a table view to a visualization view.
Read moreSynthetic benchmarks have their place, but I have always preferred working with real data. Not client production data — that stays private — but publicly available datasets that reflect the messy shapes, skewed distributions, and indexing challenges you encounter in the wild.
Read more
