How to remove the first line from a file on the command line. How to remove the first 2, 3 or any other number of lines from a file

To fix the error that I wrote about in the previous post, I needed to remove a single line from the files with the exported databases. Moreover, the size of some files exceeds 2 GB and this action must be repeated many times. If you try to open a 2 GB file in any text […]

ERROR at line 1: Unknown command ‘\-‘. (SOLVED)

The database management systems (DBMS) MariaDB and MySQL are quite compatible with each other (at least in basic functionality). And until recently, it was possible to import and export databases from MariaDB to MySQL and vice versa without any problems. If you have updated MariaDB to the latest version, you may receive the following error […]

How to concatenate multiple videos into one file in Linux in GUI without re-encoding (HEVC and other video formats)

Table of contents 1. How to make one video file from several videos 2. How to combine multiple HEVC videos into one file 3. The difference between combining video files without re-encoding and combining video with encoding 4. Download a program to combine videos into one file. How to install LosslessCut 5. How to combine […]

How to merge multiple videos into one file without re-encoding (HEVC and other video formats)

Table of contents 1. How to make one video file from several videos 2. How to combine multiple HEVC videos into one file 3. The difference between combining video files without re-encoding and combining video with encoding 4. Download a program to combine videos into one file. How to install LosslessCut 5. How to combine […]

Regular Expressions in Writer (LibreOffice): A Complete Guide

Table of contents 1. How does search using regular expressions differ from regular search? Why use regular expressions for search and replace 2. Features of regular expression search Writer (LibreOffice) 3. How to enable regular expression search in Writer (LibreOffice) 4. Writer (LibreOffice) regular expression syntax 4.1 Literal meaning of symbols 4.2 Any character 4.3 […]

Why is there almost no voice heard in films (SOLVED)

Why is the voice in the film very muffled or almost inaudible? You may have encountered a situation where various special sound effects in a movie are played very loudly, and the voices of the actors are almost inaudible. Moreover, this may not happen in all films or in all media players. The simplest reason […]

How to paste unformatted text in Writer (LibreOffice) using Ctrl+V

By default, the Writer text editor in LibreOffice recognizes different clipboard contents depending on the program you copied the text from. For example, if you copied a fragment from a site (web page), then in addition to the always present “Unformatted text” option, there will also be the insertion option “HyperText Markup Language (HTML)”. If […]

How to change the Word Completion key and other Word Completion settings in Writer (LibreOffice)

Word completion is a text editor feature that offers suggestions for the complete word as you type words. If you see that the program has suggested the correct word, then you can press the button (“Enter” by default) and the word will be added automatically. All in all, it is a handy feature, although it […]

How to play a movie with an external audio track in VLC

In a convenient context menu, you can select an audio track (for example, with different languages or dubbing from different studios). But this only works if all audio tracks are embedded in one video file. But what if you want to play a video in VLC along with the audio in a separate file? VLC […]

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