Print multiple files in Linux

The problem

Print many files in a single session is a common problem for people that works with big data set. Big documentation, Tax forms PDFs, lot’s of images or photos, are all data that are often stored in separated files. When you need to print them, you have to open each file with specific reader and click on print button.

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Delete history of on your own SparkleShare server

SparkleShare is a little Open Source software that allows users to share documents and files with version control and client side encryption system.

To put it simply, it acts like Dropbox or Ubuntu One, but it works on top of a Git repository. This means that, if you want, you can simply setup you own a SparkleShare server and share office documents with your colleagues having all infrastructure under your control using Git.

This is exactly my office’s approach and it works very well.

There’s only an issue about this: sometimes you need to share big files for a limited period of time. Actually, SparkleShare (v 1.1) has no feature to clear history and this means that Git repositories contain all data needed to access to revisions. In simple words: each repository has disk size equal to the sum of each version of each file (also deleted).

In this case it could be useful to clear repository history in order to free a lot of disk space both on server and client.

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Resize multiple images using Linux

Resize an image is a simple operation: there are many software able to do that. The most obvious are Gimp or Photoshop. But what’s the right procedure to resize lots of images?

Imagine you have to prepare thumbnails for a gallery or resize all images to insert into a presentation or, again, reduce photos to send them by email, etc.

Open each image with Gimp or Photoshop and resize them one by one is foolish. How can we perform this operation in a simple way and without stress?

The solution

Use Linux command line. Resize multiple images with Linux is very simple by using ImageMagick suite.

First of all, let’s install ImageMagick that includes lots of tools to manipulate images. To do that, execute following command in terminal window:

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Ridimensionare un gran numero di immagini con Linux

Il problema

Ridimensionare un immagine è un’operazione semplice: esistono molti software in grado di farlo. I più conosciuti sono Gimp e Photoshop. Ma qual’è la giusta procedura per ridimensionare un gran numero di immagini?

Immaginate di dover preparare le anteprime per una galleria o di dover ridimensionare tutte le immagini da inserire in una presentazione o, ancora, di dover ridurre delle foto da mandare via email, e così via.

Aprire le immagini con Gimp o Photoshop e ridimensionarle una ad una sarebbe una follia. Come si può eseguire questa operazione in modo semplice e senza stress?

La soluzione

Utilizzare la riga di comando di Linux. Ridimensionare più immagini con Linux è molto semplice se si utilizza la suite ImageMagick.

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