http://tldp.org/LDP/abs/html/index.html

Here is a quick script for sending an email:

#!/bin/bash
 
# Subject of email
SUBJECT="Test email with attachment from a bash script"
 
# Where to send it
TO_ADDRESS="your@email.com"
 
# Where the attachment is
ATTACHMENT_FILE="/tmp/attachment.txt"
 
# For fun, let's put something into the attachment
echo "This goes into the file."  >  $ATTACHMENT_FILE
echo "This appends to the file." >> $ATTACHMENT_FILE
 
# send the message
/bin/mail -s "$SUBJECT" "$TO_ADDRESS" < $ATTACHMENT_FILE

Well this turned out to be an adventure…

The First Attempt

The first solution I found was to use sed/grep sort of logic:

#mysqlshow -u username -p dbname xx\\_% |sed 's/[|+-]//g'|sed 's/[ ]*$/,/'>droptables.sql

(xx\\_% is how you tell it to show tables starting with xx_)

This produced a semi-useful list. But I had to manually edit out the extra commas and line feeds to get a pure list, then add “DROP TABLE ” to the beginning of the list. Then feed this into mysql as follows:

#mysql -u username -p dbname < droptables.sql

I wasn’t real happy with that answer, naturally, so I researched more…

A Better Solution

I came across an alternative in this command:

mysqldump -u username -p --add-drop-table --no-data dbname | grep "^DROP.*\`xx_" | mysql -u username -p dbname

(replace xx_ with the prefix you want to remove, to do all tables, try just “grep ^DROP”

You can test it first by cutting off the last “| mysql…” bit and see the output, which is useful for debugging, before you go blowing away your tables.

Surprisingly, it has nothing to do with “service”, which is how you start/stop it manually. It has the very unintuitive command “chkconfig” to make it start on boot. What a choice: chckconfig!

Oh well, here it is:

chkconfig --add httpd
chkconfig httpd on

Please insert a rewritable or blank CD.

I hit the forums and found this very relevant discussion.[/url] Apparently the forums hit the forums… because their solution pointed to [url=http://www.xcdroast.org]www.xcdroast.org, who had this to say:

Linux Kernel 2.6.8 broke CD-Writing:
I had several reports that the last 2.6.x kernel broke CD-Writing using the ATAPI driver. Don’t update if you want to continue to use X-CD-Roast, or switch back to SCSI-emulation.
Update: When started from a root shell burning still works, but non-root mode is disabled by this kernel.

So the solution is to run the programs as root. I was able to burn my cd using:

root@Tiki:~# cdrecord dev=/dev/cdrw1 driveropts=burnfree -v -data /home/kato/Desktop/tmp/ubuntu-6.06.1-server-i386.iso

Looks like others used sudo k3d with comparable success.

I didn’t bother trying to figure out which program the “Write to Disk” command traces back to. But it looks like K3d already has a fix. Maybe Ubuntu will provide a fix soon, too…