Plan 9 from Bell Labs’s /usr/web/sources/plan9/sys/lib/dist/logcompress.awk
{ verb[$4] = $3 data[$4] = sprintf("%s %s %s %s %s %s", $5, $6, $7, $8, $9, $10) } END{ for(i in verb) if(verb[i] != "d") printf("a %s %s\n", i, data[i]) |"sort +1" close("sort +1") for(i in verb) if(verb[i] == "d") printf("d %s %s\n", i, data[i]) |"sort -r +1" close("sort -r +1") }