This shortens it a little and cleans up the output some too.
perl -lne '@f=localtime((stat)[9]);$t{sprintf"%d%02d%02d",$f[5]+1900,$
+f[4]+1,$f[3]}+=-s;}{print"$_ $t{$_}"for keys%t'
But... to what purpose do you want to golf this? If you are tired of typing it or something, just stick it in a shell script as is and forget about it.
-sauoq
"My two cents aren't worth a dime.";
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