Akamai's standard log format (esw3c (W3c–style) Log Format) to combined(JST)

akamai_esw3c_2_combined.sh

#!/bin/sh
LANG=C
/bin/gawk -F"\t" '$0 !~ /^#/ {

## make epochtime from timestamp
split($1, d, "-");
split($2, t, ":");
timestamp=d[1]" "d[2]" "d[3]" "t[1]" "t[2]" "t[3];
epochtime=mktime(timestamp);

## GMT ==> JST
epochtime+=32400;

## make apache format timestamp
timestamp_jst=strftime("[%d/%b/%Y:%H:%M:%S %z]", epochtime);

## print in combined like format
print $3,"-","-",timestamp_jst,"\""$4,$5,"HTTP/1.1""\"",$6,$7,$9,$10,$8;
}'