Author: rchapin

Disabling Window Snapping for Fedora Core 20 Under Xfce

Posted on by rchapin

For me, window snapping is incredibly annoying.

For FC 20 with the Xfce spin, there a couple of knobs to turn before it can be turned off completely:

Applications Menu/Settings/Window Manager:

Go to the Advanced tab and uncheck ‘Snap windows to screen border’ and ‘Snap windows to other windows’

Applications Menu/Settings/Window Manager Tweaks:

Go to Accessibility tabUncheck the ‘Use edge resistance instead of window snapping’→ Continue reading “Disabling Window Snapping for Fedora Core 20 Under Xfce”

Executing Dynamically Generated SQL Queries in a Shell Script and Saving the Output to a Variable

Posted on by rchapin

If you would like to, in a shell script, dynamically generate SQL queries for MySQL and save the output of those queries to a variable that you can then use in the script, here is an example:

#!/bin/bash

for i in `cat tables_list.txt`
do

   # Build the query
   QUERY="SELECT count(*) FROM ${i}"

   # Run the query from the command-line and save the
   # output into the $ROW_COUNT variable
   ROW_COUNT=$(echo $QUERY | mysql -u${USER_NAME} -p${PASSWORD} -h ${HOST} -P ${PORT} --skip-column-names ${DBASE})

  
→ Continue reading “Executing Dynamically Generated SQL Queries in a Shell Script and Saving the Output to a Variable”

Figuring out MySQL ERROR 1005 (HY000) Can’t create table (errno: 150)

Posted on by rchapin

So I’m dumping a database on a remote server to pull down to my local box to do some development.  When loading the mysqldump file I encountered the error:

ERROR 1005 (HY000) at line 8680: Can't create table 'database.table' (errno: 150)

After doing some searching online it seems that is one of the notoriously cryptic MySQL error messages that is woefully overloaded.

I did manage to fix the error (which ended up being a foreign key reference from another table → Continue reading “Figuring out MySQL ERROR 1005 (HY000) Can’t create table (errno: 150)”

Install Android Application Directly Without it Being in the Market

Posted on by rchapin

When developing apps you will not only want to test them against the Eclipse AVDs but also install them on an actual device.

To do so, set up an HTTP server (here is a link to another article on how to set up a quick and dirty HTTP server) and put you .apk file somewhere where you can get to it from your local network.

Make sure that you check the ‘Unknown sources’ setting that will enable you to → Continue reading “Install Android Application Directly Without it Being in the Market”

Deleting Safari Cookies in iOS Simulator

Posted on by rchapin

If you are doing any kind of development that involves cookies and need to be able to delete them while testing iOS you will likely need to delete them as well.

The iOS simulator (Launched from Xcode by going to Xcode > Open Developer Tool > iOS Simulator) stores data for the simulator in the following directory on the host Mac OSX file system:  /Users/<uid>/Library/Application Support/iPhone Simulator/

First, quit out of the iOS Simulator.

To find the cookies and delete → Continue reading “Deleting Safari Cookies in iOS Simulator”

Executing MySQL Queries and Commands from the Command Line to a Remote Server

Posted on by rchapin

Following are a couple of ways to execute SQL on a remote MySQL server via the shell.

Executing SQL directly from the command line:

$ mysql -u uid -p -h remote.host database -e ‘SQL query here;’

Executing SQL from a file on the local host on the remote server:

$ mysql -u uid -p -h remote.host database < file.sql

You can also connect to the remote mysql server and from the command line execute SQL from files on the local → Continue reading “Executing MySQL Queries and Commands from the Command Line to a Remote Server”

Executing Dynamically Generated SQL Queries from a Shell Script

Posted on by rchapin

Following is how to generate dynamic SQL in a shell script and then execute those queries.

Let’s say, for instance, that you have a list of tables that you want to flush regularly during development and don’t want to type in the SQL queries each time.  Moreover, you just want to maintain a list of the table names and add and remove from it when necessary and have your script dynamically generate and execute the delete statements.

For the purposes → Continue reading “Executing Dynamically Generated SQL Queries from a Shell Script”

Send a Text Message To Your Cell Phone From E-mail

Posted on by rchapin

This might be old news but I came accross this today and wanted to make a note of it for myself for future reference.

All that you need to do is address the message to the phone number @ the service prodivers designated domain that they use to convert and forward the message content to your mobile device.

What I see interesting in this is being able to send txt messages from a system or service that encounters an error → Continue reading “Send a Text Message To Your Cell Phone From E-mail”

Setting Up Android SDK and Plugin in an Existing Install of Eclipse

Posted on by rchapin

To set up an existing install of Eclipse to do some Android development do the following:

  • Go to http://developer.android.com/sdk/index.html and look for and download the ADT bundle for your OS (in my case I was using Fedora Core 18 at the time)
  • Unpack it as the user that is going to be running Eclipse and/or after you unpack it make sure that your user has read/write/execute permissons for the files in this directory (obviously, you don’t need execute permssion for
→ Continue reading “Setting Up Android SDK and Plugin in an Existing Install of Eclipse”
© 2005 Ryan Chapin