New Apache SSL configuration

Today Apache complained about SSLCertificateChainFile being deprecated and it told me to use SSLCertificateFile instead.

SSLCertificateFile was already in use with the .crt file. I had to create a new ‘SSLCertificateFile’ by concatenating the .crt file with the ca-bundle, and that fixed the problem:

# cat trust.jj5.net.crt trust.jj5.net.ca-bundle.pem > trust.jj5.net.pem

Apache2 REQUEST_FILENAME requires DOCUMENT_ROOT

I had a problem with my rewrite rules, that looked like this:

  DocumentRoot /var/www/trust.jj5.net
  RewriteEngine On
  RewriteCond %{REQUEST_FILENAME} !-f
  RewriteCond %{REQUEST_FILENAME} !-d
  RewriteRule (.*) http://trust.jj5.net/sorry.html [L,R]

I was trying to redirect any request which didn’t match a file or directory. The !-f and !-d requirements were failing because the path to the REQUEST_FILENAME wasn’t fully qualified. I fixed the problem by including the DOCUMENT_ROOT:

  DocumentRoot /var/www/trust.jj5.net
  RewriteEngine On
  RewriteCond %{DOCUMENT_ROOT}%{REQUEST_FILENAME} !-f
  RewriteCond %{DOCUMENT_ROOT}%{REQUEST_FILENAME} !-d
  RewriteRule (.*) http://trust.jj5.net/sorry.html [L,R]

Happy days! :)

dir2ogg (no chipmunks!)

Learned about dir2ogg over here and am using it to convert MP3 to OGG.

So… I installed dir2ogg:

# apt-get install dir2ogg

And then I ran it on some MP3s, and the generated OGG files sounded like chipmunks. I read the man page for dir2ogg and saw that it had an option for mp3-decoder. I tried specifying the lame decoder but it complained that it couldn’t find it, so:

# apt-get install lame

Then I ran dir2ogg with the following command and the ouput OGG files sounded proper!

$ dir2ogg --mp3-decoder=lame --quality=10 .

Happy days!

psql show tables

I wanted to know what the analogue for MySQL ‘show tables’ was in PostgreSQL, and I found the answer, use the information_schema, here:

mysql: SHOW TABLES
postgresql: \d
postgresql: SELECT table_name FROM information_schema.tables WHERE table_schema = 'public';

mysql: SHOW DATABASES
postgresql: \l
postgresql: SELECT datname FROM pg_database;

mysql: SHOW COLUMNS
postgresql: \d table
postgresql: SELECT column_name FROM information_schema.columns WHERE table_name ='table';

mysql: DESCRIBE TABLE
postgresql: \d+ table
postgresql: SELECT column_name FROM information_schema.columns WHERE table_name ='table';