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Matt Mower

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Example crontab using delay script

# Delay the startup of my daemon processes. The start_after_delay
# script is a Ruby script which will Kernel.sleep the given time
# (plus a random 10% extra) before executing the given command
@reboot /home/mmower/bin/start_after_delay 45m /usr/local/bin/ruby /home/mmower/domains/
/instiki-0.10.2 --port nnnn --storage /home/mmower/domains/
@reboot /home/mmower/bin/start_after_delay 45m /usr/local/sbin/lighttpd -f /home/mmower/lighttpd/lighttpd.c

Ruby script to delay execution of a command (intended for @reboot crontab)

# Start after delay

# Delay specifications must be one of Xs (secs), Xm (mins), Xh (hours)
case ARGV[0]
when /(\d+)s/
@delay = $1.to_i
when /(\d+)m/
@delay = 60 * $1.to_i
when /(\d+)h/
@delay = 3600 * $1.to_i
raise "Incorrect delay specification"

# A random factor of up to 10% will be added to any given delay
@rf = ( @delay * 0.1 ).to_i
@delay += rand( @rf )
sleep( @delay )

# Join up remaining arguments to form the command to be executed
ARGV.slice!( 0 )
@command = ARGV.join( ' ' )
exec( @command )

A query from ActiveRecord that isn't working

t.*, j.* FROM terms_values j, values t WHERE = j.value_id AND j.term_id = 310

TextMate indenting

class Feed < ActiveRecord::Base
has_many :items

def self.aggregate

Feed.find_by_sql( "SELECT * FROM feeds WHERE is_enabled = 1 AND ( DATE_ADD( last_read, INTERVAL 1 HOUR ) < NOW() OR last_read = 0 OR last_read IS NULL )" ).each do |feed|

Looking for the MySQL socket

Irulan:~/Projects/MetaValues matt$ ps wwaux |grep mysql
root 220 0.0 0.2 27792 884 ?? S Tue12PM 0:00.04 /bin/sh ./bin/mysqld_safe --datadir=/usr/local/mysql/data --pid-file=/usr/local/mysql/data/
mysql 239 0.0 1.2 62328 6328 ?? R Tue12PM 3:22.34 /usr/local/mysql/bin/mysqld --defaults-extra-file=/usr/local/mysql/data/my.cnf --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --user=mysql --pid-file=/usr/local/mysql/data/

When in fact what we wanted was mysqladmin -p variables | grep socket
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