Tag: change

More fun with FFmpeg. How to reverse video colors in interesting ways.

FFmpeg allows interesting video manipulation. This includes inverting the colours of video files. The example below will invert the colours of a video file. ┌──[[email protected]]─[~/Videos/titles] └──╼ ╼ $ ffmpeg -i zombiestrain.avi -vf lutrgb="r=negval:g=negval:b=negval" zomby.avi┌──[[email protected]]─[~/Videos/titles] └──╼ ╼ $ ffmpeg -i zombiestrain.avi -vf lutrgb="r=negval:g=negval:b=negval" zomby.avi This is an example of what this…

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Change management systems are necessary in the modern world.

Information technology systems are often large and complex. With this size and complexity comes a growing risk of problems and faults that can affect user productivity. Users have high expectations of live systems such as file servers, web servers, databases etc. Although users generally accept that problems and faults can…

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How to change the default window manager on OpenBSD.

I am using OpenBSD, and I do not like the default Window Manager used by the operating system. I installed the Fluxbox Window Manager and I had to tell X11 to load it instead of the default. I did it like this. Install the Xorg packages during installation, then you…

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Change your Linux shell easily with the chsh command.

This is how to change your login shell with the chsh command. This requires the user to log out and then back in to use their new shell. ubuntu ~ $ sudo chsh -s /bin/bashubuntu ~ $ sudo chsh -s /bin/bash Only a shell listed in /etc/shells may be used….

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How to change the Virtual Terminal font in Debian and Ubuntu easily.

To change the font in the Virtual Terminal in Debian or Ubuntu/Linux Mint, run this command. sudo dpkg-reconfigure console-setupsudo dpkg-reconfigure console-setup This lets you select the various character sets and fonts to customize your virtual terminal. jason@jason-desktop:~$ sudo dpkg-reconfigure console-setup [sudo] password for jason: Your console font configuration will be…

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How to change the Ubuntu hostname easily.

Change the hostname easily on your Ubuntu or Linux Mint machine To change the hostname of an Ubuntu machine, there are a couple of files that need editing. Firstly, open the /etc/hostname file and change the hostname in here to the one you wish to use. 09:51:17 0 ~ jason$…

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Change your MAC address on Linux with the command line.

To change your MAC address in Linux, you just need to issue these few commands, and then re-run dhcp or reconfigure the interface. This works for both wired and wireless cards. Bring down the interface. jason@eyjafjallajkull:~$ sudo ifconfig eth0 down [sudo] password for jason:jason@eyjafjallajkull:~$ sudo ifconfig eth0 down [sudo] password…

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How to change the default shell for new users on your Ubuntu Linux system.

The useradd command is used to add new users on your Linux system. But it can be used for other things too. You may display the defaults for new users. jason-H55-USB3% sudo useradd -D GROUP=100 HOME=/home INACTIVE=-1 EXPIRE= SHELL=/bin/sh SKEL=/etc/skel CREATE_MAIL_SPOOL=nojason-H55-USB3% sudo useradd -D GROUP=100 HOME=/home INACTIVE=-1 EXPIRE= SHELL=/bin/sh SKEL=/etc/skel…

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How to change the default plymouth theme manually on Ubuntu 14.10.

Change the default Plymouth theme on Ubuntu Changing the default plymouth theme on Ubuntu 14.10 is not very difficult. Just type this at the shell prompt. This will set the new theme. root@homer-eME730:~# update-alternatives –install /lib/plymouth/themes/default.plymouth default.plymouth /lib/plymouth/themes/ubuntustudio-logo/ubuntustudio-logo.plymouth 100root@homer-eME730:~# update-alternatives –install /lib/plymouth/themes/default.plymouth default.plymouth /lib/plymouth/themes/ubuntustudio-logo/ubuntustudio-logo.plymouth 100 Now we need to save…

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