Computer science thoughts

Scripts and tips

Read and edit ePUB files

Astuces diverses

An overview of some software on Windows to read and modify ePUB files.

Fix "Unknown: failed to open stream: No such file or directory in Unknown on line 0"


While viewing your website, you may have the following two errors displayed: Warning: Unknown: failed to open stream: No such file or directory in Unknown on line 0 Fatal error: Unknown: Failed opening required...

Auto-assign the last modification time of a row (PostgreSQL/MySQL)


Depending on the DBMS, the way to automatically assign the date and time on the modified lines differs.

Synchronize a PocketBook eReader with a personal server

Astuces diverses

If you have a "Tea" brand e-reader (Vivlio), Inkpad or Touch HD model, here is a way to synchronize it with a personal server.

Fix Talend when it's not using the right execution context


It may happen that Talend Open Studio does not use the correct execution context. Typically, you run it on the pre-production context, and the variables it uses are NULL or unexpected values. This can cause for...

Wait for the end of a process in a Batch file

Scripts Batch / VBS

In a batch process which calls an executable, you may need to prevent this executable from being launched more than once if the batch is restarted. It is then interesting to wait for the end of the process or to...

Reclaim disk space on an Ubuntu server


Commands to reduce disk space occupied by obsolete files

Compile pgModeler on Windows


pgModeler is an Open Source software allowing to model a database, that is to say to schematize everything related to the construction of a base (tables, fields, relations, constraints ...) and oriented towards the...

Replace JPG, PNG and GIF files by WebP


Presentation and implementation of WebP on a website

Embed and adjust subtitles in a MKV file


A technique for adding a subtitle file (SRT) to an MKV file and adjusting the subtitles to spoken text.

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