Timestamp na różne sposoby

$ echo 1234567890 | awk '{ print strftime("%c",$1) }'
sob, 14 lut 2009, 00:31:30

$ awk 'BEGIN { print strftime("%c",1234567890) }'
sob, 14 lut 2009, 00:31:30

$ date -d "1970-01-01 1234567890 sec GMT"
sob, 14 lut 2009, 00:31:30 CET

$ date -d @1234567890
sob, 14 lut 2009, 00:31:30 CET

>>> import time
>>> time.ctime(1234567890)
'Sat Feb 14 00:31:30 2009'
>>> # Locale information is not used by `ctime()`.
>>> import locale
>>> locale.setlocale(locale.LC_ALL, 'pl_PL')
'pl_PL'
>>> time.strftime('%c', time.localtime(1234567890))
'sob, 14 lut 2009, 00:31:30'

$ perl -e 'print scalar localtime(1234567890),"\n"'
Sat Feb 14 00:31:30 2009

$ perl -e "print scalar localtime(1234567890).qq(\n)"
Sat Feb 14 00:31:30 2009