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Category Archives: Linux
Quitck tip: how to prevent wvdial to update your DNS
Sometimes you need to prevent your DNS to be updated by wvdial.
Here’s how to do it.
- edit /etc/ppp/peers/wvdial and comment usepeerdns like this
#usepeerdns - disable DNS update in /etc/wvdial.conf adding this line
Auto DNS = Off
That’s all.
Postfix with gmail as relay on Debian Squeeze
My Situation
A server running Debian Squeeze.
A valid Gmail account.
Procedure
Make sure you have the right packages installed
# aptitude install postfix libsasl2 ca-certificates libsasl2-modules
Make a backup of your original files
# tar cfz /var/backups/etc-postfix_20121105.tgz /etc/postfix/
Modify /etc/postfix/main.cf
relayhost = [smtp.gmail.com]:587
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/sasl/passwd
smtp_sasl_security_options = noanonymous
smtp_tls_CAfile = /etc/postfix/cacert.pem
smtp_use_tls = yes
Create /etc/postfix/sasl/passwd with your “user” and “password” values
[smtp.gmail.com]:587 theuser@gmail.com:thesecretpassword
Secure your new file and make it usable for Postfix
# chmod 400 /etc/postfix/sasl/passwd
# postmap /etc/postfix/sasl/passwd
# ls -l /etc/postfix/sasl/
total 12
-r-------- 1 root root 57 Nov 5 00:39 passwd
-rw------- 1 root root 12288 Nov 5 00:40 passwd.db
Make sure you have the right certification authorities available to Postfix
# cat /etc/ssl/certs/Thawte_Premium_Server_CA.pem >> /etc/postfix/cacert.pem
# cat /etc/ssl/certs/Equifax_Secure_Global_eBusiness_CA.pem >> /etc/postfix/cacert.pem
Restart Postfix
/etc/init.d/postfix restart
done
Android on Ubuntu: IOException on aapt
As I told in a previous post, I’m setting up a new Ubuntu installation and I want to compile something for Android on it.
After installing Android SDK I got this error on my first iteration of “ant debug”
BUILD FAILED
/home/max/AndroidSDK/android-sdk-linux/tools/ant/build.xml:621: The following error occurred while executing this line:
/home/max/AndroidSDK/android-sdk-linux/tools/ant/build.xml:657: Execute failed: java.io.IOException: Cannot run program "/home/max/AndroidSDK/android-sdk-linux/platform-tools/aapt": error=2, No such file or directory
The error is in some way misleading because the binary is there, but the problem is that it’s a 32-bit executable
max@praxi:~$ ls -l /home/max/AndroidSDK/android-sdk-linux/platform-tools/aapt
-rwxr-xr-x 1 max max 929400 Jul 27 14:33 /home/max/AndroidSDK/android-sdk-linux/platform-tools/aapt
max@praxi:~$ file /home/max/AndroidSDK/android-sdk-linux/platform-tools/aapt
/home/max/AndroidSDK/android-sdk-linux/platform-tools/aapt: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.8, stripped
The solution is near: we need 32-bit libraries
root@praxi:~# aptitude install ia32-libs
As always it’s a good idea to RTFM:
The Android Ant-based build system requires Ant 1.8.0
I’m setting up a new Ubuntu installation (Quantal Quetzal) and I’m going to play with some Android code on it.
The first test I did after installing the Android SDK gave me this result:
BUILD FAILED
/home/max/AndroidSDK/android-sdk-linux/tools/ant/build.xml:377: The Android Ant-based build system requires Ant 1.8.0 or later. Current version is 1.7.1
This is not what I needed, but fortunately the solution is easy enough.
Doing something like this solved my issue:
root@praxi:~# aptitude install ant=1.8.2-4build2
Done