Python IDE - Eclipse + PyDev

用 Eclipse + PyDev 開發 Google App Engine 的程式

http://blog.ericsk.org/archives/889

Installing PECL uploadprogress Extension for Drupal (RHEL)

The PECL uploadprogress modules allows a user to see a upload progress bar.
This is a great UI that makes uploading in action and hence good user experience.

To intall uploadprogress module:

1. install php development, pecl, pear, and development tools if you not yet have them installed:

yum -y install php-devel php-pecl php-pear
yum -y groupinstall "Development Tools"

2. install the upload progress:

pecl install uploadprogress

This is what you should get:

[root@xxx]# pecl install uploadprogress
downloading uploadprogress-1.0.1.tgz ...
Starting to download uploadprogress-1.0.1.tgz (8,536 bytes)
.....done: 8,536 bytes
4 source files, building
running: phpize
Configuring for:
PHP Api Version: 20041225
Zend Module Api No: 20060613
Zend Extension Api No: 220060519
building in /var/tmp/pear-build-root/uploadprogress-1.0.1
running: /var/tmp/uploadprogress/configure
checking for egrep... grep -E
checking for a sed that does not truncate output... /bin/sed
checking for cc... cc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether cc accepts -g... yes
checking for cc option to accept ANSI C... none needed
checking how to run the C preprocessor... cc -E
checking for icc... no
checking for suncc... no
checking whether cc understands -c and -o together... yes
checking for system library directory... lib
checking if compiler supports -R... no
checking if compiler supports -Wl,-rpath,... yes
checking build system type... i686-redhat-linux-gnu
checking host system type... i686-redhat-linux-gnu
checking target system type... i686-redhat-linux-gnu
checking for PHP prefix... /usr
checking for PHP includes... -I/usr/include/php -I/usr/include/php/main -I/usr/include/php/TSRM -I/usr/include/php/Zend -I/usr/include/php/ext -I/usr/include/php/ext/date/lib
checking for PHP extension directory... /usr/lib/php/modules
checking for PHP installed headers prefix... /usr/include/php
checking if debug is enabled... no
checking if zts is enabled... no
checking for re2c... no
configure: WARNING: You will need re2c 0.13.4 or later if you want to regenerate PHP parsers.
checking for gawk... gawk
checking whether to enable uploadprogress functions... yes, shared
checking for ld used by cc... /usr/bin/ld
checking if the linker (/usr/bin/ld) is GNU ld... yes
checking for /usr/bin/ld option to reload object files... -r
checking for BSD-compatible nm... /usr/bin/nm -B
checking whether ln -s works... yes
checking how to recognise dependent libraries... pass_all
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking dlfcn.h usability... yes
checking dlfcn.h presence... yes
checking for dlfcn.h... yes
checking for g77... no
checking for f77... no
checking for xlf... no
checking for frt... no
checking for pgf77... no
checking for fort77... no
checking for fl32... no
checking for af77... no
checking for f90... no
checking for xlf90... no
checking for pgf90... no
checking for epcf90... no
checking for f95... f95
checking whether we are using the GNU Fortran 77 compiler... yes
checking whether f95 accepts -g... yes
checking the maximum length of command line arguments... 32768
checking command to parse /usr/bin/nm -B output from cc object... ok
checking for objdir... .libs
checking for ar... ar
checking for ranlib... ranlib
checking for strip... strip
checking if cc supports -fno-rtti -fno-exceptions... no
checking for cc option to produce PIC... -fPIC
checking if cc PIC flag -fPIC works... yes
checking if cc static flag -static works... yes
checking if cc supports -c -o file.o... yes
checking whether the cc linker (/usr/bin/ld) supports shared libraries... yes
checking whether -lc should be explicitly linked in... no
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... no
configure: creating libtool
appending configuration tag "CXX" to libtool
appending configuration tag "F77" to libtool
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... no
checking for f95 option to produce PIC... -fPIC
checking if f95 PIC flag -fPIC works... yes
checking if f95 static flag -static works... yes
checking if f95 supports -c -o file.o... yes
checking whether the f95 linker (/usr/bin/ld) supports shared libraries... yes
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... immediate
configure: creating ./config.status
config.status: creating config.h
running: make
/bin/sh /var/tmp/pear-build-root/uploadprogress-1.0.1/libtool --mode=compile cc -I. -I/var/tmp/uploadprogress -DPHP_ATOM_INC -I/var/tmp/pear-build-root/uploadprogress-1.0.1/include -I/var/tmp/pear-build-root/uploadprogress-1.0.1/main -I/var/tmp/uploadprogress -I/usr/include/php -I/usr/include/php/main -I/usr/include/php/TSRM -I/usr/include/php/Zend -I/usr/include/php/ext -I/usr/include/php/ext/date/lib -DHAVE_CONFIG_H -g -O2 -c /var/tmp/uploadprogress/uploadprogress.c -o uploadprogress.lo
mkdir .libs
cc -I. -I/var/tmp/uploadprogress -DPHP_ATOM_INC -I/var/tmp/pear-build-root/uploadprogress-1.0.1/include -I/var/tmp/pear-build-root/uploadprogress-1.0.1/main -I/var/tmp/uploadprogress -I/usr/include/php -I/usr/include/php/main -I/usr/include/php/TSRM -I/usr/include/php/Zend -I/usr/include/php/ext -I/usr/include/php/ext/date/lib -DHAVE_CONFIG_H -g -O2 -c /var/tmp/uploadprogress/uploadprogress.c -fPIC -DPIC -o .libs/uploadprogress.o
/bin/sh /var/tmp/pear-build-root/uploadprogress-1.0.1/libtool --mode=link cc -DPHP_ATOM_INC -I/var/tmp/pear-build-root/uploadprogress-1.0.1/include -I/var/tmp/pear-build-root/uploadprogress-1.0.1/main -I/var/tmp/uploadprogress -I/usr/include/php -I/usr/include/php/main -I/usr/include/php/TSRM -I/usr/include/php/Zend -I/usr/include/php/ext -I/usr/include/php/ext/date/lib -DHAVE_CONFIG_H -g -O2 -o uploadprogress.la -export-dynamic -avoid-version -prefer-pic -module -rpath /var/tmp/pear-build-root/uploadprogress-1.0.1/modules uploadprogress.lo
cc -shared .libs/uploadprogress.o -Wl,-soname -Wl,uploadprogress.so -o .libs/uploadprogress.so
creating uploadprogress.la
(cd .libs && rm -f uploadprogress.la && ln -s ../uploadprogress.la uploadprogress.la)
/bin/sh /var/tmp/pear-build-root/uploadprogress-1.0.1/libtool --mode=install cp ./uploadprogress.la /var/tmp/pear-build-root/uploadprogress-1.0.1/modules
cp ./.libs/uploadprogress.so /var/tmp/pear-build-root/uploadprogress-1.0.1/modules/uploadprogress.so
cp ./.libs/uploadprogress.lai /var/tmp/pear-build-root/uploadprogress-1.0.1/modules/uploadprogress.la
PATH="$PATH:/sbin" ldconfig -n /var/tmp/pear-build-root/uploadprogress-1.0.1/modules
----------------------------------------------------------------------
Libraries have been installed in:
/var/tmp/pear-build-root/uploadprogress-1.0.1/modules

If you ever happen to want to link against installed libraries
in a given directory, LIBDIR, you must either use libtool, and
specify the full pathname of the library, or use the `-LLIBDIR'
flag during linking and do at least one of the following:
- add LIBDIR to the `LD_LIBRARY_PATH' environment variable
during execution
- add LIBDIR to the `LD_RUN_PATH' environment variable
during linking
- use the `-Wl,--rpath -Wl,LIBDIR' linker flag
- have your system administrator add LIBDIR to `/etc/ld.so.conf'

See any operating system documentation about shared libraries for
more information, such as the ld(1) and ld.so(8) manual pages.
----------------------------------------------------------------------

Build complete.
Don't forget to run 'make test'.

running: make INSTALL_ROOT="/var/tmp/pear-build-root/install-uploadprogress-1.0.1" install
Installing shared extensions: /var/tmp/pear-build-root/install-uploadprogress-1.0.1/usr/lib/php/modules/
running: find "/var/tmp/pear-build-root/install-uploadprogress-1.0.1" | xargs ls -dils
27529277 4 drwxr-xr-x 3 root root 4096 Jul 22 00:48 /var/tmp/pear-build-root/install-uploadprogress-1.0.1
27529298 4 drwxr-xr-x 3 root root 4096 Jul 22 00:48 /var/tmp/pear-build-root/install-uploadprogress-1.0.1/usr
27529299 4 drwxr-xr-x 3 root root 4096 Jul 22 00:48 /var/tmp/pear-build-root/install-uploadprogress-1.0.1/usr/lib
27529300 4 drwxr-xr-x 3 root root 4096 Jul 22 00:48 /var/tmp/pear-build-root/install-uploadprogress-1.0.1/usr/lib/php
27529301 4 drwxr-xr-x 2 root root 4096 Jul 22 00:48 /var/tmp/pear-build-root/install-uploadprogress-1.0.1/usr/lib/php/modules
27529297 44 -rwxr-xr-x 1 root root 43639 Jul 22 00:48 /var/tmp/pear-build-root/install-uploadprogress-1.0.1/usr/lib/php/modules/uploadprogress.so

Build process completed successfully
Installing '/usr/lib/php/modules/uploadprogress.so'
install ok: channel://pecl.php.net/uploadprogress-1.0.1
configuration option "php_ini" is not set to php.ini location
You should add "extension=uploadprogress.so" to php.ini

3. add the extension to php.ini:

extension=uploadprogress.so

4. restart apache for the changes to take effect.

service httpd restart


REHL: Install latest PHP (5.2.x) from Remi repository

A few app requires PHP 5.2.x but major repositories is yet support anything higher than 5.1.6 at this time. Recompile PHP is a pain also.

Remi maintains a repository that can save your 1 day or 2 if you have such need.

cd /etc/yum.repos.d/
wget http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-3.noarch.rpm
wget http://rpms.famillecollet.com/enterprise/remi-release-5.rpm
rpm -Uvh remi-release-5*.rpm epel-release-5*.rpm

You now have Remi repository on your system. It's disabled by default, and I recommend you leave it as is. To install from remi, run the following:

yum --enablerepo=remi update php

I use remi to install php and its related stuff like GD, mcrypt, etc. As well as MySQL. The repository rocks!

Recover a disk failure for LVM (CentOS)

I've put together old hardware pieces at home for a download & file sharing box. It got 4 old disks (30G, 250G, 500G, 80G) together. Knowing that disks will out of its life sooner or later, I rsync important stuff to the mac next to it. Couple weeks ago, shit finally happen.

The broken disk is the 30G, so most of stuff are still in the other disks. To recover, I put into a new disk, re-install CentOS, so the box is bootable again. Now I need to re-activate and mount the old disks.

Re-install CentOS
1.Put in the new disk, go to Bios and make sure CD-ROM is having first boot priority, and the new disk is the boot disk in Hard Disk boot priority setting.
2.Put in the CentOS DVD, boot from it. In the install process, make sure you don’t re-partition the old disks.
3.If you are not sure what to do, you can un-plug the power cores of all old disks, install on the new disk first. Once the installation is finished, plug back the power of old disks, boot from DVD again, and reset the boot loader.
4.Now you’ve got a bootable box with all the disks in place.

RHEL systems like Red Hat, CentOS or Fedora, partition the disks automatically at install time. By default, it sets up the partitions using LVM for the root device.
By default, the OS set up a volume group called VolGroup00, with two logical volumes, LogVol00 and LogVol01, the first for the root directory and the second for swap.

Since the new disk is big enough, I set up the new disk (not using the volume). As you can see in the partition layout of physical disks below (/dev/sda is the new disk):
[root@xxx]# sfdisk -l

Disk /dev/hda: 19457 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

Device Boot Start End #cyls #blocks Id System
/dev/hda1 * 0+ 19456 19457- 156288321 8e Linux LVM
/dev/hda2 0 - 0 0 0 Empty
/dev/hda3 0 - 0 0 0 Empty
/dev/hda4 0 - 0 0 0 Empty

Disk /dev/hdc: 24792 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

Device Boot Start End #cyls #blocks Id System
/dev/hdc1 * 0+ 24791 24792- 199141708+ 8e Linux LVM
/dev/hdc2 0 - 0 0 0 Empty
/dev/hdc3 0 - 0 0 0 Empty
/dev/hdc4 0 - 0 0 0 Empty

Disk /dev/sda: 38913 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

Device Boot Start End #cyls #blocks Id System
/dev/sda1 * 0+ 12 13- 104391 83 Linux
/dev/sda2 267 38912 38646 310423995 83 Linux
/dev/sda3 13 266 254 2040255 82 Linux swap / Solaris
/dev/sda4 0 - 0 0 0 Empty

Disk /dev/sdb: 60801 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0

Device Boot Start End #cyls #blocks Id System
/dev/sdb1 * 0+ 60800 60801- 488384001 8e Linux LVM
/dev/sdb2 0 - 0 0 0 Empty
/dev/sdb3 0 - 0 0 0 Empty
/dev/sdb4 0 - 0 0 0 Empty

To re-activate and re-mount
vgchange is the utility to update/change your volume group attribute. Since one of the disk in previous volume is missing, I need to vgchange –ay –partial to activate the volume.

[root@xxx]# vgchange –ay –partial
Couldn't find device with uuid 'AiegxE-NfQy-AA5E-OUcn-bvpY-UG3o-5oT1gY'.
/dev/mapper/VolGroup00-LogVol00-missing_3_0: read failed after 0 of 4096 at 0: Input/output error
/dev/mapper/VolGroup00-LogVol01-missing_0_0: read failed after 0 of 4096 at 0: Input/output error
/dev/VolGroup00/LogVol01: read failed after 0 of 4096 at 0: Input/output error
Couldn't find device with uuid 'AiegxE-NfQy-AA5E-OUcn-bvpY-UG3o-5oT1gY'.
2 logical volume(s) in volume group "VolGroup00" now active

Well, a lot of error due to the missing disk, but the volume is active now. You can verify by:

[root@xxx]# lvscan
/dev/VolGroup00/LogVol00: read failed after 0 of 4096 at 892413607936: Input/output error
/dev/VolGroup00/LogVol00: read failed after 0 of 4096 at 892413665280: Input/output error
/dev/mapper/VolGroup00-LogVol01-missing_0_0: read failed after 0 of 4096 at 2080309248: Input/output error
/dev/mapper/VolGroup00-LogVol01-missing_0_0: read failed after 0 of 4096 at 4096: Input/output error
/dev/mapper/VolGroup00-LogVol01-missing_0_0: read failed after 0 of 4096 at 0: Input/output error
/dev/VolGroup00/LogVol01: read failed after 0 of 4096 at 2080309248: Input/output error
/dev/VolGroup00/LogVol01: read failed after 0 of 4096 at 2080366592: Input/output error
Couldn't find device with uuid 'AiegxE-NfQy-AA5E-OUcn-bvpY-UG3o-5oT1gY'.
/dev/mapper/VolGroup00-LogVol00-missing_3_0: read failed after 0 of 4096 at 0: Input/output error
/dev/VolGroup00/LogVol01: read failed after 0 of 4096 at 0: Input/output error
Couldn't find device with uuid 'AiegxE-NfQy-AA5E-OUcn-bvpY-UG3o-5oT1gY'.
/dev/mapper/VolGroup00-LogVol00-missing_3_0: read failed after 0 of 4096 at 0: Input/output error
/dev/VolGroup00/LogVol01: read failed after 0 of 4096 at 0: Input/output error
Couldn't find device with uuid 'AiegxE-NfQy-AA5E-OUcn-bvpY-UG3o-5oT1gY'.
ACTIVE '/dev/VolGroup00/LogVol00' [831.12 GB] inherit
ACTIVE '/dev/VolGroup00/LogVol01' [1.94 GB] inherit

Now you can mount the active volume by:
[root@xxx]# mount /dev/VolGroup00/LogVol00 /mnt

The old volume is now accessible at /mnt
[root@xxx]# ls –al /mnt

What Next
I copy the stuff I want to recover. What to do with the old drives? I need to think about...Having a old box on all time is actually costly (in term of electric bill). But having a box on is handy in many occurrences..

Ref:
http://www.linuxjournal.com/article/8874
http://fedoraforum.org/forum/archive/index.php/t-64964.html

win2k8 workstation - Disabling Internet Explorer Enhanced Security using registry

To turn off Internet Explorer Enhanced Security Configuration, you can remove the IEHarden registry entry from the user account profile. To do this, follow these steps:

1. run Regedit.exe.

2. Locate and then click the following registry subkey: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zonemap

3. In the details pane, right-click IEHarden, click Modify, type 0 (zero) in the Value data box, and then click OK.

4. You can also remove this registry entry. Locate and then click the following registry subkey: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings

5. In the details pane, right-click IEHardenIENoWarn, click Modify, type 0 (zero) in the Value data box, and then click OK.

6. Exit Registry Editor, and then start Internet Explorer.

7. On the Tools menu, click Internet Options. Click the Advanced tab, click Restore Defaults, and then click OK.

ref:
-http://support.microsoft.com/kb/933991/
-http://www.win2008workstation.com/wordpress/2008/03/08/disabling-internet-explorer-enhanced-security/

How to sync an iPhone with two (or more) Computers

http://theappleblog.com/2009/02/26/sync-iphone-ipod-with-multiple-computers

One thing I have always wanted to do is be able to sync my iPhone or iPod with any computer. Lifehacker had an article a while back on doing this, but the software they used does not support the iPhone or iPod touch. So, I have developed a method to connect any iPod or iPhone to any computer to download the music or movies from that computer to the iPod or iPhone.

Once configured, you only need your iPhone/iPod, the USB sync cable, and a computer with iTunes to implement the hack (the idea being you always have your iPhone or iPod and the person with the computer has the iPod USB cable). It takes about 20 minutes to set this hack up and then only a few seconds to implement each time you would like to use it.

Things to Note

• If you want to be able to do this hack on both Mac and Windows machines, you’re going to have to configure two separate iTunes libraries: one from a Mac and one from a Windows machine.
• I was using an iPhone when writing this tutorial, so the iPod directions may vary slightly.
• If you are using an iPhone or iPod touch: When you sync your device, the account last used to access the iTunes Store from the computer is synced to the mobile device. So make sure you sign out of your friend’s iTunes account before you sync your device, otherwise when you try to download the application via the app store on your phone you will be logged in as them.
• This method does not work with DRM’ed music.
• Using this method will let you plug your iPhone/iPod into any computer and listen to the music directly off of it. Whereas before, this was not possible.

What You’ll Need

• Computer with iTunes
• iPhone: Wi-Fi, USB cable, iTunes, phone
• iPod: cable, iTunes, iPod
• Software (Mac): Smultron, Hex Feind, IpodDisk (Open Source Free Software for Macs)
• Software (Windows): Hex Edit, Pod to PC

Configure Your iPhone/iPod for Use as External Storage

You are only going to have to configure your iPhone or iPod to be used an external storage once.

• iPhone: Download & Configure Air Sharing ($4.99)
• iPod: Setup as hard drive
  1. Connect iPod to computer and open iTunes
  2. iTunes > Preferences > iPod Tab
  3. Click checkbox “Enable disk use”
  4. Close iTunes

Manually Manage Music and Videos On iPhoneiPod

We need to make it so we can simply drag songs onto our iPhone/iPod.

1. Launch iTunes
2. Connect iPhone/iPod
3. Select the “Manually manage my iPhone/iPod” option
4. Close iTunes

Create an iTunes Index On Your iPhone/iPod

If you want to be able to sync with both Mac and Windows computers you will have to make two separate iTunes index folders: one for the Mac and one for Windows boxes. So, just do this step both a Mac and Windows machine.

1. Mount your iPhone/iPod as external storage device.
2. Point the iTunes index to your iPhone/iPod. On a Mac: while holding “option,” double click on your iTunes icon. On a Windows machine: while holding “Shift,” double click on your iTunes icon in your start menu.
3. A “Choose your library” window will pop up. Select “Create Library.”
4. Under “Where” select the location on your iPod/iPhone from the pulldown. Save as: “iTunes1″. iTunes will Launch. Close it. If you decide to do this on a Mac and Windows machine, make a folder called “iTunes 1″ from the Mac and a folder called “iTunes 2″ from the Windows machine.

Editing Files On iPhone/iPod

You are only going to have to edit the files on your iPhone once. We need to edit those files so that whatever computer you connect your device to will think it can sync to your iPhone/iPod. I found this tutorial over at the Shiny Things blog. Thanks Andrew!

1. On your computer navigate to your iTunes music folder. Macs: User> Music > iTunes. Windows: Music > iTunes.
2. Right click on “iTunes Music Library.xml” and open it with a text editor (Smultron, or something similar, in OS X and Notepad in Windows)
3. Look for the “Library Persistent ID”
4. There will be a string of numbers and letters between the “string” tags. (In the screenshot below it is 2817B0BEDC7A2E5F). Copy this entry to another document for safe keeping.
   
5. It’s time to edit the files on your iPhone/iPod. Go ahead and mount your iPhone/iPod and then navigate to the iTunes folder we created earlier.
6. Find the “iTunes Music Library.xml,” and open it with a text editor.
7. Look for the “Library Persistent ID.” First, copy whatever is between “string” tags to a text document for safe keeping. Next, Replace whatever is between the “string” tags with our key that we copied earlier. In our example we are replacing the ID on the iPhone/iPod with 2817B0BEDC7A2E5F
8. Save the file and close it.
9. Now find the file called “iTunes Music Library” and open it with the Hexeditor mentioned above in “What You’ll Need.” (On a Windows machine it is called “iTunes Music Library.itl”)
10. Select “Find and Replace” from the Edit menu. Make sure “Hex” matching is selected (not ASCII). In “Find” enter the ID from the iPhone/iPod before we replaced it (The ID we put into a text document in step 7). In Replace, enter the ID we copied from the original computer (in our example it’s 2817B0BEDC7A2E5F). Choose Replace All, there should be one match.
11. Save the file. Close the Hexeditor.
12. We are now completely done configuring the iPhone/iPod. If you want to be able to sync to both Windows and Mac machines, make sure the do the all the steps listed above on both machines.

Getting Music From Other Computers (Finally!)

Getting music from computers that are not your home computer is the step that you will have to perform over and over again.

1. Mount your iPhone (using Air Sharing) or iPod (as an external storage device)
2. Point the computer’s iTunes index to the one on your iPhone/iPod. Mac: while holding “option,” double click on your iTunes icon. Windows: while holding “Shift,” double click on your iTunes icon in your start menu.
3. A “Choose your library” window will pop up. Select “Choose Library.”
4. Navigate to the “iTunes 1″ or “iTunes 2″ (depending on if you’re on Mac or a Window’s machine) folder on your iPhone/iPod and select “Open”
5. iTunes will launch
6. The actual iTunes library will be empty, this is OK. We aren’t adding things to the iTunes library, just to the iPhone/iPod library. Your iPhone/iPod should appear in the left hand column of iTunes. Click on your iPhone’s or iPod’s music library to select it. A playlist should appear in the main iTunes screen with all the music form the iPhone/iPod.
7. Drag any music you want into your iPhone’s library. Make sure you drag into your iPhone’s/iPod’s library, not the iTunes library.
   
8. Since we are loading the library our iPhone/iPod is connected to, not the computer’s local iTunes library, we have to manually locate music on the computer to be able to add it to our iPhone or iPod. In OS X navigate to: User > Music > iTunes > iTunes Music. In Windows navigate to: My Documents > Music > iTunes > iTunes Music.
9. When you’re done getting music, safely disconnect your iPhone/iPod and close iTunes.
10. As a final step, we need to point the computer back to its original iTunes library. On a Mac: while holding “option,” double click on your iTunes icon. On a Windows machine: while holding “Shift,” double click on your iTunes icon in your start menu.
11. A “Choose your library” window will pop up. Select “Choose library.” Point to the iTunes Music folder on their computer (Inside the Music folder on both Mac and PC).

Getting the New Music Back Onto Your Main Computer

iTunes won’t let you take the music off your iPhone/iPod, so we’re going to have to use third party software.

1. Download iPodDisk (OS X Free Open Source iPod Ripping Software) or Pod to PC (Windows)
2. I made a playlist on my iPhone called “New” so I know what to download.
3. Import all songs from the “New” playlist.
4. Empty the “New” playlist so that you do not accidentally download the same songs next time you sync.

And there you have it! I know it’s a lot to digest, so please let me know if you have any questions in the comments.

jazzvideoguy.tv