Dev Tips

#!/bin/bash
FILES=/home/rafal/Pictures/Mockba/*
for f in $FILES
do
    echo “resize $f “
    cp $f $f”.bak”
    mogrify -resize 50%  $f
done 

— to debug POP3 —
# telnet x.x.x.x 110
user USERNAME
pass PASSWORD
stat
quit

— to debug IMAP —
# telnet x.x.x.x 143
a login USERNAME PASSWORD
a examine inbox
a logout

— to debug POP3 over SSL —
# openssl s_client -connect x.x.x.x:995
(then use same commands as POP3 example)

— to debug IMAP over SSL —
# openssl s_client -connect x.x.x.x:993
(then use same commands as IMAP example)

Create iso file from cd drive:

 dd if=/dev/cdrom of=/home/user/cd.iso 

Create iso file from cd drive:

dd if=/dev/dvd of=/home/user/dvd.iso 

Create iso file from scsi cd drive:

dd if=/dev/scd0 of=/home/user/cd.iso 

Mount  iso file  and unmount :

mount -o loop -t iso9660 /home/user/cd.iso /mnt/dir_for_mount 

umount -lf /mnt/dir_for_mount 

UPDATE mysql.user SET Password=PASSWORD(‘myNewPassword’) WHERE User=’root’;
FLUSH PRIVILEGES;

echo “This is the message body” | mutt -a file_attach.zip -s “subject of message” recipient@domain.com

1. http://www.barrgroup.com/Embedded-Systems/How-To/Embedded-Java

2.http://www.youtube.com/watch?v=mdHCWPZ-kbQ&feature=BFa&list=PL62BE418C34C3B2BD

3.http://www.javaworld.com/javaworld/jw-09-1996/jw-09-ripps.html 

rsync -vaz /path/to/dirA/ /path/to/dir/B

Copy all files from dirA to dirB

rsync -vaz /path/to/dirA /path/to/dir/B

Copy dirA with all files to dirB

rsync -vaz --exclude=subdirC/ --exclude=*.tmp /path/to/dirA /path/to/dirB 

Copy all files from dirA to dirB without  sundir named “subdirC” and files *.tmp

[skowroniasty@localhost ~]$ cat .bash_profile
# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
    . ~/.bashrc
fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin

export JAVA_HOME=/usr/java/latest
export PATH=”$PATH:$JAVA_HOME/bin”
export GRAILS_HOME=/home/skowroniasty/grails-2.0.3/
export PATH=”$PATH:$GRAILS_HOME/bin”
export PATH

#!/usr/bin/env python

””” Send e-mail from LAN client when WAN IP was changed “”“

“Rafal Skowron”
“date 16-02-2012”
“for Python 2.7”

import urllib2
import smtplib
import re
import time

””“Current IP IParray”“”
IParray=()
isNewIP= False
sleepTime=4 #in sec
isError= False
sendError = False

def getIpFromWeb():
     global IParray
     global isNewIP
     global isError
     web=”http://www.showmyip.com”
     try:
        tmpHtml=urllib2.urlopen(web)
        ip = re.findall( r’[0-9]+(?:.[0-9]+){3}’, tmpHtml.read())
     except Exception, e:
        print ‘Something bad happened when try get page.’
        print ‘Reason: ‘, str(e.reason) + ” address: ” + web
        time.sleep(4)
        isError=True
        return True
    else:
       CurrentIP = dict(map(lambda i: (i,1),ip)).keys()
       isError=False
    if len(IParray)<1:
       IParray =CurrentIP
       #print “New IP”
       isNewIP=True
    else:
         tmp = set(IParray) & set (CurrentIP)
         if len(tmp)>0:
           #print “IP this same”
            isNewIP=False
         else:
            #print “New IP” 
           isNewIP=True

def sendIpToEmail():
     global IParray  
     global sendError
     FROMADDR = “mymail@o2.pl”
     LOGIN = “haslo_maslo”
     PASSWORD = “password”
     TOADDRS = [“destEmail@test.pl”]
     SUBJECT = “IP was changed”
     mText=”My new IP address is one of this: “
     strIPs=”“
for i in IParray:
     strIPs+=i
     strIPs+=”, “

msg = (“From: %s\r\nTo: %s\r\nSubject: %s\r\n\r\n”
% (FROMADDR, “, “.join(TOADDRS), SUBJECT) )
msg += mText+strIPs+”\r\n”
try:
    server = smtplib.SMTP(‘poczta.o2.pl’, 587)
    server.set_debuglevel(1)  
    #server.ehlo() #FOR GMAIL
    #server.starttls() #FOR GMAIL
    server.login(LOGIN, PASSWORD)
    server.sendmail(FROMADDR, TOADDRS, msg)
    server.quit()
    sendError=False
except Exception, e:
    sendError=True
    print ‘Something bad happened when try send email.’
    print ‘MSG: ‘, str(e)  

    return True 

””” RUN CODE “”“

while 1:
     time.sleep(sleepTime)
     getIpFromWeb()

if isNewIP== True and isError == False:
   sendIpToEmail()
 

1. Download Driver from NVidia web
2. Set inittab to level 3 
    vi /etc/inittab 
3. Remove nouveau driver 
    yum remove xorg-x11-drv-nouveau 
and reboot OS. 
 4. Add nouveau to blocklist on boot 
   vi /boot/grub/menu.lst and add rdblacklist=nouveau on line with kernel params
 5. Set chmod +x to downloaded driver and install 
chmod +x NVIDIA-Linux-x86_64-285.05.09.run &&./ NVIDIA-Linux-x86_64-285.05.09.run