khi gia
Is that “jugard”-ing?
Compiling libpcap + flex + bison locally
To compile flex, bison and libpcap in a local folder, need to tweak a bit the build of libpcap:
> diff runlex.sh.orig runlex.sh
70c70
< if [ “${LEX}” = flex ]
—-
> if [ `basename “${LEX}”` = flex ]
Then:
V_LEX=”/my/local/folder/bin/flex -Ppcap_” \
V_YACC=”/my/local/folder/bin/bison -y -p pcap_” \
./configure —prefix=/my/local/folder
This is for:
hellotxting :)
antique junk
Netezza muti-proc system give nearly always different ordering on the same query/same data (no ‘order by’ in query of course!). Even partitioned table in Oracle seems to give always same ordering.
Haskell tutorial for concurrency
Great tutorial of all (lot) things about concurrency.
Written in Haskell, this is a good read even for non Haskell programmer. That’s a long time I’m saying I should digg into data paralell haskell … there are great example in the last part of this article.
join on command line
join -t’,’ -1 2 -2 1 -o “1.1 0 2.2” -a 1 f1 f2
This create a join of 2 CSV files f1 and f2, using column 2 as key for f1 and column 1 for f2, printing column 1 fo f1 and the key and column 2 of f2, and ensuring all lines of f1 are in output (left outer join).
blackhole
This is not a dead pixel on my LCD screen … this is a dead mosquito inside my screen :(
