jms

grep -v  '^#' file | grep '\w' > new.file

jms

import hashlib
hashlib.md5(textToHash).hexdigest()

jms

# get a random password from console using tr, dc, urandom

 tr -dc a-zA-Z0-9 < /dev/urandom | head -c 10 ; echo -en "\n"

jms

# .---------------- minute (0 - 59)
# |  .------------- hour (0 - 23)
# |  |  .---------- day of month (1 - 31)
# |  |  |  .------- month (1 - 12) OR jan,feb,mar,apr ...
# |  |  |  |  .---- day of week (0 - 6) (Sunday=0 or 7)  OR sun,mon,tue,wed,thu,fri,sat
# |  |  |  |  |
# *  *  *  *  *  command to be executed
  *  *  *  *  *  command --arg1 --arg2 file1 file2 2>&1

jms

dd count=1 bs=512 if=/dev/zero of=/dev/sdb && sync

jms

iconv --verbose -f UTF-8 -t ISO-8859-1 input.txt > output.txt

jms

command line
---------------------------------
padrino g project achiever -d none -t rspec -s none -e erb -c none -m none -b
padrino g controller Admin get:index get:new post:create
padrino start                               #defaults, non daemonized
padrino start -d -p 3000 -e development     #daemonized, port 3000, specified env
padrino 
padrino rake spec
padrino rake routes

jms

<?php 
$to = "[email protected]";

$subject = "test";

$body = "Body of your message here you can use HTML too. e.g. <br> <b> Bold </b>";

$headers = "From: Peter\r\n";
$headers .= "Reply-To: [email protected]\r\n";
$headers .= "Return-Path: [email protected]\r\n";

jms

# flush queue

sendmail -q -v

find /var/spool/mqueue/* -type f -exec grep -irl “domainname.com” {} \; -exec rm -vf {} \;

# check queue

mailq

jms

ln -s /usr/sbin/cf-serverd /var/cfengine/bin/cf-serverd
ln -s /usr/sbin/cf-monitord  /var/cfengine/bin/cf-monitord