If you have a hosting account at Hetzner with free backup space, you can not access this backup volume using rsync. One way of creating a simple backup, is by using the tar command with the incremental option. You will also want to encrypt these backup files and one easy to do this, is by […]
Below is a small Perl example how to check for NFS mounted shares on a Linux host. The script does not need any specific modules, and makes use of the /etc/mtab file. #!/usr/bin/perl use strict; use warnings; my @mount_points = do {local @ARGV = ‘/etc/mtab’; }; foreach my $mnt (@mount_points){ next unless $mnt =~ /nfs/; […]
There are definetly a few modules on CPAN which will allow to easily change file permissions in Perl, but you do not always have the chance or possibility to install CPAN modules. The following examples explain how to change the original file permissions to either remove or set new permissions. One way of doing this, […]
The Roundcube version (0.3.1) in Debian Squeeze is just too outdated. To create a new Debian package, using the latest version of Roundcube, is fairly easy. Download the latest source (currently 0.8.1) from http://www.roundcube.net/download, and put the TAR image (roundcubemail-0.8.1.tar.gz) in /usr/src. Now execute at the command line $ cd /usr/src $ apt-get install devscripts […]
One way to secure your MySQL backups, is to encrypt the backup file using PGP/GnuPG. Of course you will need to own a PGP/GnuPG private key, which can be easily created using the PGP/GnuPG tools. On a Debian/Ubuntu Linux host, install the ‘gnupg’ package. # apt-get install gnupg After installation, generate a PGP/GnuPG key using […]
It can happen that a VMWare virtual machine (VM) runs out of space after a certain amount of time. If the installed Debian Linux (actually any kind of Linux) has been set up with LVM, resizing the partition is fairly easy. This article assumes that the VM has been installed with just one root partition, […]
In some situations, you need to watch a directory for uploaded files and move/process them immediately. Many scripts work in a polling kind of way, which will check every x amounts of seconds for new files. This is nowadays completely out of fashion and generaly not cool. A real watcher script uses the OS’s built-in […]
When you are not using Debian unstable or some kind of Linux distro that hasn’t got the latest version of the dmesg command, you will not be able to execute ‘dmesg -T‘ to see human readable timestamp in the output. A small Perl script does the trick: #!/usr/bin/perl -wn use strict; foreach my $line () […]
Two videoclips of downhilling last weekend in Bikepark Wagrain. It was filmed with GoPro HD Hero cam, attached to the chest belt, which is in my opinion not the ideal setup.