perl - How can I convert a date to epoch time? -

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i have huge formatted file of form:

29/01/2010 18:00 string1 string2 .....  30/01/2010 18:30 string3 string4 .....  ...  ...  dd/mm/yyyy hh:mm strings strings....

i need perform statistics based on dates.

so substitute string dd/mm/yyyy hh:mm epoch time in file in order perform simple manipulations.

i suppose best way use perl, don't know start. hints?

just that? quick-and-dirty one-liner should do:

perl -mposix -pwe 's{^(\d{2})/(\d{2})/(\d{4}) (\d{2}):(\d{2}) }{mktime(0,$5,$4,$1,$2-1,$3-1900)." "}e;'

feed file on standard input , output changed version standard output. lines have "dd/mm/yyyy hh:mm " @ start, , feed date components mktime function posix module unix timestamp.


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