You have a UNIX timestamp and don’t know which date it represents? You have a date
string without timezone and want to see where it probably originates? You have a
number of bytes that looks suspiciously like 23 Terabytes, but you want to be
sure? Good thing there’s guess!
See it in action:
$ ./guess 1443346122085
Timestamp 1443346122085 is 2015-09-27 19:28:42.085 +1000 AEST (within the day, 4 hours 22 minutes ago)
In other time zones:
2015-09-27 02:28:42.085 -0700 PDT (America/Los_Angeles)
2015-09-27 05:28:42.085 -0400 EDT (America/New_York)
2015-09-27 09:28:42.085 +0000 UTC (UTC)
2015-09-27 11:28:42.085 +0200 CEST (Europe/Berlin)
2015-09-27 13:28:42.085 +0400 GST (Asia/Dubai)
2015-09-27 17:28:42.085 +0800 SGT (Asia/Singapore)
2015-09-27 19:28:42.085 +1000 AEST (Australia/Sydney)
UNIX timestamp: 1443346122
$ ./guess 8TiB
8796093022208 bytes
8589934592.0 KiB (8796093022.2 KB)
8388608.0 MiB (8796093.0 MB)
8192.0 GiB (8796.1 GB)
8.0 TiB (8.8 TB)
$ ./guess 2001:4860:4860::8888
IP address 2001:4860:4860::8888
reverse lookup: google-public-dns-a.google.com.
which resolves to: 8.8.8.8, 2001:4860:4860::8888
$ ./guess "2015-09-25 15:00:00"
In local time: 2015-09-25 15:00:00 +1000 AEST (within the week, 2 days 8 hours 51 minutes 44 seconds ago)
From PDT (America/Los_Angeles): 2015-09-26 08:00:00 +1000 AEST September 2015
From EDT (America/New_York): 2015-09-26 05:00:00 +1000 AEST Mo Tu We Th Fr Sa Su
From UTC (UTC): 2015-09-26 01:00:00 +1000 AEST 1 2 3 4 5 6
From CEST (Europe/Berlin): 2015-09-25 23:00:00 +1000 AEST 7 8 9 10 11 12 13
From GST (Asia/Dubai): 2015-09-25 21:00:00 +1000 AEST 14 15 16 17 18 19 20
From SGT (Asia/Singapore): 2015-09-25 17:00:00 +1000 AEST 21 22 23 24 25 26 27
From AEST (Australia/Sydney): 2015-09-25 15:00:00 +1000 AEST 28 29 30
Take a look at the shell script g for how to call this program with flexible
input options. The script guess-notify demonstrates how you can have the
output appear as a desktop notification. Pro tip: Bind it to a key combination
or function key that you can press with your non-mouse hand!
The simple way to download the dependencies and compile the tool is this:
export GOPATH=${GOPATH:-$HOME/src/go}
go get
go build