Uncategorized

In times of Facebook, Google and YouTube, why should it still be necessary torely on outdated technology like Usenet/NNTP? Portals like phpBB also invite youto exchange ideas with other users. So why should you use Usenet these days? From my point of view the question is very simple: It is a tried and testedstandard, similar … Read more

Especially with automated scripts which establish SSH connections to external systems, the request for a password within the script is undesirable or leads to the script being blocked. It is possible to simulate such password entries with the expect tool, but this is anything but secure. The best way is authentication via RSA keys, which … Read more

There are several approaches here. The order of the images is problematic. The easiest way would be by: A warning is issued here because the pipe is aborted and ffmpeg does not seem to be able to recognize this. Another method would be via image names which contain a sequential counter in the file name. … Read more

Measurements by means of dd Measure writing performance. This test can also be used with CIFS and NFS andis relatively objective: The parameter fdatasync only ends the =dd= command when the data has beencompletely synced. Instead, you could also use oflag=dsync which also takescaches into account and waits until they have been written. To test … Read more

Using incorrect Exif data can also be corrected (in this case the year is increasedby 3)

Create a spectrogram (Image) The following command creates a WAV file using Alsa (Device 2.0). In thiscase, Sox is additionally piped, which is completely unnecessary here,however, Sox could still add various filters to the resulting test.wavchange: Using the file test.wav that has just been created, a spectrogram is now generated: The following command creates a … Read more