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Linux Hack – How to Resume SCP Transfers after Interruption!

max — Sun, 06 Sep 2009 07:32:17 +0000

For those of you who need to “resume” SCP file transfers that have been interrupted, there’s an easy way to resume them using rsync command.

Use this:

alias scpresume="rsync --partial --progress --rsh=ssh"

For Ubuntu or Debian add sudo:

alias scpresume="sudo rsync --partial --progress --rsh=ssh"

This is great since you won’t have to restart your file transfers if you happened to be transferring files around 100GB.

Perks include understanding the same user@host:path syntax as scp as well as being able to resume a broken scp download (Note: I’m not guaranteeing this, but after downloading 90% of 400MB I was able to pick up the rest using this).

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Linux Hack – How to Resume SCP Transfers after Interruption!

GoogleDocs Hack – How to Bring Stock Feeds to GoogleDocs Spreadsheets!

max — Wed, 15 Oct 2008 01:28:45 +0000

It’s been months since I dumped Microsoft Outlook for GoogleDocs and I have to say, it’s rather nice to have all your important data online, retrievable by any computer with internet access rather than having to carry or send/receive any data.

Getting back to the point of this story is the fact that you can actually feed GoogleDocs spreadsheets stock market data simply using a syntax of code shown here:

Retrieving Current Stock Information
=GoogleFinance("symbol", "attribute")
Pulling Historical Stock Data
=GoogleFinance("symbol", "attribute", "start_date", "end_date", "interval")

Yes, this is yet another example how Google is far superior to Microsoft, especially the fact that you can link up stuff from websites.

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GoogleDocs Hack – How to Bring Stock Feeds to GoogleDocs Spreadsheets!

DIY Linux Web Server HACK – Automate your MySQL MySQL database backups

max — Mon, 11 Feb 2008 01:24:29 +0000

Okay, I’ve been running dedicated servers for couple years now and I used to mess around with Linux boxes back in college.

Here’s an essential automatic script and a cron job you will need in order to keep your backup automatic.

Yes, if you get a dedicated server, don’t get their stupid extra $15/month for backing up your database. (All they do is make scripts like this one and charge you for it)

You can follow this example and go spend that money on junk food.

So all you have to do is FTP your backup files.

This is way better than going into your phpMyAdmin and downloading from the web interface since the file is already ready for you to download.

Here’s how you do it:

1) Make a new file called backup.sh in your home directory. 2) Use the following syntax:

mysqldump -u[USERNAME] -p[PASSWORD] --opt [DATABASE NAME] > /root/backup/DATABASE1.sql

Here’s an example backup.sh file if you had 2 databases:

mysqldump -uUser1 -pPassword1 --opt Database1 > /root/backup/Database1.sql
mysqldump -uUser2 -pPassword2 --opt Database2 > /root/backup/Database2.sql
tar cvf /root/backup/sqlbackup.tar /root/backup/*

You can test your script by typing this:

sh backup.sh

(The mysqldump will overwrite the older file if you run this more than once)

3) If everything is working good, now you can put that script to be run once a day in your cron job.

For Fedora Core, you can edit this file /etc/cron.d/sa-update

Add the following line:

10 3 * * * root sh /root/backup/backup.sh

This will execute the script once a day at 3:10AM.

Now simply download one tar ball file whenever you feel like backing up your database.

You can probably change this a little bit and use it for many other things like backing up all your files too. (which I do)

If you have multiple servers like me, you can also automate your scripts to download backup databases to each server. That keeps things real redundant in case of server failure.

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DIY Linux Web Server HACK – Automate your MySQL MySQL database backups

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Linux Hack – How to Resume SCP Transfers after Interruption!

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