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mysql respawning too fast, stopped & init: mysql post-start process (5075) terminated with status 1

Submitted by Druss on Tue, 2012-05-08 23:38

After my upgrade from Lucid to Precise (and thereby, from MySQL 5.1 to 5.5), I found that my MySQL instance was not running. When I tried to start the service all I got back was that it had failed to start.

PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626+lfs/'

Submitted by Druss on Tue, 2012-05-08 14:39

After an upgrade from Lucid to Precise, my PHP install started complaining about a library:

PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib/php5/20090626+lfs/'

While I've got a hunch that the actual problem is related to issues I had during the upgrade, turning this error (and other similar ones) off is as simple as going into /etc/php5/conf.d and renaming the file, in this case gd.ini to something like gd.ini.bak.

Linux: Copy contents of a file to the clipboard from the command-line

Submitted by Druss on Tue, 2012-03-27 15:13

I needed to upload the contents of a lengthy log file to a site earlier today. There was no option to simply attach the file. I was instead asked to just paste its contents. I suppose that I could have opened the file in an editor like Kate and copied its contents to the clipboard. But I became curious as to the possibility of accomplishing this from within the terminal. A little googling revealed the existence of a utility named xsel for this very purpose.

Lucid to Precise Kubuntu upgrade: adobe-flashplugin cannot be removed

Submitted by Druss on Mon, 2012-03-26 22:53

So I tried updating one of my boxen running the Lucid Kubuntu LTS to the new Precise Pangolin beta. During the upgrade, I received an error message stating that adobe-flashplugin could not be upgraded. I ignored it and continued with the upgrade and all went swimmingly. Once the upgrade was completed and I had rebooted, when I tried to run an apt-get update, I ran into an error with respect to the adobe-flashplugin package. When I tried to remove it, it did not work. As a stop-gap measure, I removed a number of packages that depended on it including Firefox and sun-java6.

Resetting PuTTY / Terminal after viewing a binary file

Submitted by Druss on Tue, 2012-02-07 00:17

If you've been working with Linux terminals for a while, you've invariably found that viewing a binary file tends to output a lot of hieroglyphic nonsense (when all you want to do is check its header) and for some petty collateral damage, rapes your screen by changing your command prompt and window title to more of the same gibberish. While a lot of people (*raises hand*) simply accept such rowdy behaviour as one of the vagaries of life and simple open a new terminal window or similar, this - as I found out a few minutes ago - can be fixed.

sed: Deleting all lines between two types of lines

Submitted by Druss on Sat, 2012-01-28 01:17

Today, I made quite an impression on my furniture thanks to incessant contact between it and my illustrious head. This, as usual, was due to my looking for a clean regex to solve my issue while working with text files in Vim. My task was, I initially believed, quite simple: delete all the lines that are sandwiched between two types/patterns of lines. In this case, the top slice of the sandwich consisted of a line which was entirely a number and the bottom slice was a line entirely populated with underscores.

KDE network manager disabled

Submitted by Druss on Sat, 2011-12-31 15:45

One of my laptops which is running on Kubuntu Lucid decided to stop connecting to my network today. I found that the KDE network-manager applet (or is it a plasmoid? :S) had decided to disable itself. Clicking it stated so with no option to re-enable it (nice UI, boys). Getting to the commandline and starting the network-manager service did not help. I also found that accessing the System settings networking configuration gave me corrupt XML file errors.

E: Dynamic MMap ran out of room. Please increase the size of APT::Cache-Limit

Submitted by Druss on Wed, 2011-12-07 03:35

I ran into the following error when I added a new repository to my kubuntu box and ran apt-get update:
E: Dynamic MMap ran out of room. Please increase the size of APT::Cache-Limit. Current value: 123123. (man 5 apt.conf)

To fix this, navigate to /etc/apt/apt.conf.d and edit the file related to debconf which in my case was 70debconf. Add the following line to the bottom of this file and save it:
APT::Cache-Limit "200000000";

Error message: iptables-restore v1.x.x: no command specified

Submitted by Druss on Thu, 2011-11-24 12:29

If you run into the following error message when attempting an iptables-restore < my.rules:
iptables-restore v1.4.8: no command specified
then the problem is that you have very likely just copied and pasted stuff into my.rules which has led to some dodgy line-breaks terminating blank lines in the file.


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