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The following command on my Mac (10.6) gives me an undefined function error:
$ awk 'BEGIN{now=strftime("%D", systime()); print now}'
awk: calling undefined function strftime
source line number 1
On a Red Hat system, I get the expected result:
$ awk 'BEGIN{now=strftime("%D", systime()); print now}'
12/01/09
What’s the deal here?
strftime is a GNU gawk extension. If you want to use strftime, download GNU gawk and install on your Mac. Otherwise, there are other tools like Perl/Python you can use. Check if you have them on your Mac