perl -pi~ -e 's/old/new/g' filename[s]

---

  /var/log/kernel {
     prerotate
         /sbin/chattr -ai "/var/log/kernel*"
     endscript
     postrotate
         /usr/bin/killall -HUP syslogd
         /sbin/chattr +a "/var/log/kernel*"
     endscript
 }

---

date -d '1 hour ago' +'%b %m %H:%M'

---

host -l -v -t any domain.org

---

CREATE FUNCTION get_id (text) RETURNS int4 AS '
DECLARE
  id int4;
BEGIN
  id := next_id FROM id_memory WHERE id_name = $1;
  UPDATE id_memory SET next_id = (id+1) WHERE id_name = $1;
  RETURN id;
END;
' LANGUAGE 'plpgsql';

---

http://www.harker.com/gen.sendmail.cf/index.html
http://www.samiam.org/crypto/kiwi/doc/html/Intro.htm

---

<`Sauron> printf ( "%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c%c"
<`Sauron> ,71,73,70,56,57,97,1,0,1,0,128,255,0,192,192,192,0,0,0,33,249,4,1,0,0,0,0,44,0,0,0,0,1,0,1,0,0,2,2,68,1,0,59);
<`Sauron> and there we have a transparent 1x1 gif! :)

---

<FetiChico> $tmp = preg_match_all("|href=([$/\'\"a-zA-Z0-9][^\s>\'\"]+)|i",
            $contents,$linksarray);
---

<? header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . "GMT");
header("Cache-Control: no-cache, must-revalidate");
header("Pragma: no-cache"); ?>

---

<Zeev> PHP was originally Personal Home Pages
<Zeev> it then became Professional Home Pages, with the early betas of 3.0
<Zeev> and finally PHP: Hypertext Preprocessor
<Zeev> a recursive acronym a-la GNU

---

rpm -Uvh \*.rpm
sls -u -p '%t%p %3l %-u %-g %s %m %Nbs'
rpm -q -a | sed 's/-[0-9]/T/g' | cut -dT -f1
rpm -q -a | sed -e 's/\-[0-9]/T/g' | cut -dT -f1

---

lynx -dump "http://horoscopes.netscape.com/horoscopes/today/?cp=hordailys&s=aq" | perl -ne 'if (/Advice/) {$print = 0}; if (/^   Aquarius/ || $print ) { print; $print = 1}'
lynx -dump "http://horoscopes.netscape.com/horoscopes/today/?cp=hordailys&s=ar" | perl -ne 'if (/Advice/) {$print = 0}; if (/^   Aries/ || $print ) { print; $print = 1}' http://nimbus.ocis.temple.edu/~jlabonsk/camden.html

---

ctags -x *.c | grep 'function' | cut -c54-200

---

NDA
http://www.amargosa.net/mod_nda.html
http://www.amargosa.net/mod_nda2.html
http://www.adlaw.com/RC/rf_forms.html
http://www.bahnhof.se/~rednex/

---

wh-or or wh-gr bl wh-bl gr wh-br br	- straight
wh-gr gr wh-or bl wh-bl or wh-br br	- x-over

---

tcpdump src or dst port not 22 and src or dst port not 4444 and src or dst
port not 53 and src or dst port not 80 and src or dst port not
ircd and src or dst port not 4000 and src or dst host not localhost

---

http://www.python.org/doc/ext/ - Extend/Embed Python

---

Why Not MySQL?
http://openacs.org/why-not-mysql.html
MySQL offers lighter database fare, but it may leave some users hungry 
http://www.zdnet.com/enterprise/stories/linux/news/0,6423,2436155,00.html
Evaluating postgreSQL for a Production Environment
http://www.medasys-digital-systems.fr/mirror/linux/LG/issue36/defurne2.html
Academic's Tool Grows Up - PostgreSQL
http://www.32bitsonline.com/article.php3?file=issues/199912/pg_sqledit&page=1

---

[Tenchi] the default password for system is manager
[Tenchi] the default passwrod for sys is change_on_install

---

ROT13
strtr($text,"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ","nopqrstuvwxy
zabcdefghijklmNOPQRSTUVWXYZABCDEFGHIJKLM");

---

Perl RE for IP
((((2[0-4])|([01]?[0-9]))?[0-9])|25[0-5])