How to find the difference in days between two dates?

bash shell date
Tree picture Tree · Feb 9, 2011 · Viewed 184.6k times · Source

A="2002-20-10"
B="2003-22-11"

How to find the difference in days between two dates?

Answer

techjacker picture techjacker · Aug 4, 2011

The bash way - convert the dates into %y%m%d format and then you can do this straight from the command line:

echo $(( ($(date --date="031122" +%s) - $(date --date="021020" +%s) )/(60*60*24) ))

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