If you like me, you have to do a lot of installs1 of the same test machine with the same IP and have to ssh it you will notice this annoying message : IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that the RSA host key has just been changed. The fingerprint for the RSA key sent by the remote host is 54:9d:c0:37:3a:80:48:6c:82:ec:d1:84:93:61:24. Please contact your system administrator. Add correct host key in /home/cboudjnah/.ssh/known_hosts to get rid of this message. Offending key in /home/cboudjnah/.ssh/known_hosts:595 Password authentication is disabled to avoid man-in-the-middle attacks. Keyboard-interactive authentication is disabled to avoid man-in-the-middle attacks. Agent forwarding is disabled to avoid man-in-the-middle attacks. I have automated the cleanup by a script : [code lang=“bash”] #!/bin/bash H=$1 ...

Pretty good video to look if you like to know more about git and its creation : http://www.youtube.com/watch?v=4XpnKHJAok8

This is a annoying, even if it take 5mn to code thing like that : (defun my-dired-rm-rf() "Rm -rf directories" (interactive) (let ((sel (selected-window))) (dolist (curFile (dired-get-marked-files)) (if (yes-or-no-p (concat "Do you want to remove \"" (file-name-nondirectory curFile) "\" ? ")) (progn (shell-command (concat "rm -rvf " curFile) "*Removing Directories*") (kill-buffer "*Removing Directories*") (select-window sel) (revert-buffer) ) )) )) you discover after a litlle while that if you have did a lilt bit of searching before, you will have discovered a variable call `dired-recursive-deletes` that would do the thing in a much better way.

Renaming Oracle Database is a pain, coming from OpenSource DB like MySQL or PostGres where we do that all the time i did not think that Oracle have to be such a pain. My only way i can find. If i have the tablespace named tablesp1 and owned by the user user1, and i want to import it to another tablespace called tablesp2 in an another Oracle 9i tablespace with the user name user2. ...

A useful svn wrapper scripts. Get a diff of your local repostitory against the upstream repository changes. I wonder why it is not builtins though like a svn status -u but for dif. #!/bin/bash IFS=" " for line in `svn status -u`;do [[ $line != " "* ]] && continue rev=`echo $line|awk '{print $2}'` ff=`echo $line|awk '{print $3}'` svn diff -r${rev}:HEAD $ff done

I wanted to try the latest cvs snapshot with XFT support, since i did not want to screw up more my workstation i have used packages instead of make install blindy. Basically i have a script called ./build.sh #!/bin/bash set -e d=$(date '+%Y%m%d') debpatch=20061218-1 mkdir -p cvs pushd cvs >/dev/null && { cvs -Q -z3 -d:pserver:[email protected]:/sources/emacs co -r emacs-unicode-2 emacs } && popd >/dev/null mkdir -p build [[ -d build/emacs-${d} ]] && rm -rf build/emacs-${d} cp -al cvs/emacs build/emacs-${d} zcat patches/emacs-snapshot_${debpatch}.diff.gz|patch -p1 -d build/emacs-${d} cat patches/with-font.patch|patch --silent -p1 -d build/emacs-${d} pushd build/emacs-${d} >/dev/null && { chmod +x debian/rules dch -v "1:${d}-1" "New snapshot." dch "Build with xft." fakeroot dpkg-buildpackage -b } && popd >/dev/null in patches/with-font.patch i have : ...

I better to keep that somewhere since i always forget that thing, to do a search and replace from the command line in zsh. you just have to do the :s^FOO^BAR after your expansion For example you just have typed the long command line : blah bar FOO=1 FOO=3 FOO=6 cnt=1 you can just type : !blah:s^FOO^VALUE^:G and it will be expanded to : blah bar VALUE=1 VALUE=3 VALUE=6 cnt=1

To rename bunch of files via regexp i was using before a homegrown python script call rename-regexp.py{#p38} to change bunch of files with a regexp. But since then i discovered wdired which is pretty fantastic to use that from emacs. With the extended ``query-replace-regexp`` from Emacs22 stuff are much easier to rename.

pgbench is not the best tools to benchmark postgres but it’s the one shipped by default with postgres. It does not do a good job for benchmarking your “web apps” SQL wise, it will give you some good indication about how fast is your server for postgres. Here are some results we have collected using theses options : pgbench -Uuser -s 10 -c 10 -t 3000 benchmark We configure servers with RAID 1+0 with write-cache and a battery backup, we have tested with postgres 8.1.5 and here are the best results for different type of servers : ...

After installing Oracle instant client, if you have them in /usr/local/lib/instantclient_10_2, this is the command line i use : ./configure –with-instant-client=/usr/local/lib/instantclient_10_2 –with-oracle-includes=/usr/local/lib/instantclient_10_2/sdk/include –with-oracle-libraries=/usr/local/lib/instantclient_10_2 –with-oci-version=10G Let me know ny email if you want the deb for ubuntu linux.