How to record a particular area of desktop screen on Linux

Question: I want to create a screencast of a particular area on my Linux desktop (not the entire desktop). Is there screen recorder software that allows me to do that? When you need to demonstrate your desktop activities to someone else, using a screencast (i.e., recording of desktop screen) is far more effective than a […]
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How to disable GNOME Keyring on GNOME desktop

Question: I am trying to use gpg-agent for SSH authentication when my key is on a separate USB security key card. However, I notice that when I log in to my GNOME desktop, gnome-keyring-daemon is already running, which appears to interfere with gpg-agent. How can I disable GNOME keyring on my Linux desktop? GNOME Keyring […]
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How to install Ubuntu desktop behind a proxy

Question: My computer is connected to a corporate network sitting behind an HTTP proxy. When I try to install Ubuntu desktop on the computer from a CD-ROM drive, the installation hangs and never finishes while trying to retrieve files, which is presumably due to the proxy. However, the problem is that Ubuntu installer never asks […]
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How to fix Wireshark GUI freeze on Linux desktop

Question: When I try to open a pre-recorded packet dump on Wireshark on Ubuntu, its UI suddenly freezes, and the following errors and warnings appear in the terminal where I launched Wireshark. How can I fix this problem? “(wireshark:3480): GLib-GObject-WARNING **: invalid unclassed pointer in cast to ‘GObject’ (wireshark:3480): GLib-GObject-CRITICAL **: g_object_set_qdata_full: assertion ‘G_IS_OBJECT (object)’ […]
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How to install PlayOnLinux on Linux

Question: I want to run a Windows-based game in my Linux environment. For that, I would like use Wine/PlayOnLinux to install and run the Windows software on top of Linux. How can I install them on [insert your Linux distro]? Wine was developed as compatibility layer software for Linux, allowing you to run Microsoft Windows […]
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How to install Unity Tweak Tool on Ubuntu desktop

Question: I am trying to customize fresh Ubuntu desktop that I just installed. For that, I want to use Unity Tweak Tool. How can I install Unity Tweak Tool on Ubuntu? Unity Tweak Tool is a popular Unity desktop customization tool. As the name implies, this tool is applicable to Ubuntu’s default desktop environment only […]
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How to add a cron job on Linux

Question: I would like to schedule a task on my Linux box, so that the task runs periodically at fixed times. How can I add a cron job for this task on my Linux system? The cron utility is the default task scheduler used in Linux. Using cron, you can schedule a task (e.g., a […]
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How to install Shutter on CentOS

Question: I would like to try out Shutter screenshot program on my CentOS desktop. However, when I tried to install Shutter with yum, it says “No package shutter available.” How can I install Shutter on CentOS? Shutter is an open-source (GPLv3) screenshot tool for Linux desktop. It is packed with a number of user-friendly features, […]
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How to enable and configure desktop sharing on Linux Mint Cinnamon desktop

Question: I was trying to enable desktop sharing via Vino VNC server (vino-server) on Linux Mint 17 Cinnamon desktop. However, I notice that vino-preferences tool which allows us to configure vino-server (e.g., sharing option, security, notification on/off) no longer exists. Also, I cannot find desktop sharing menu on Cinnamon desktop. How can I configure desktop […]
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How to check if a particular font is installed on Linux

Question: I need to know if a particular font (e.g., Nimbus Roman, Helvetica) is installed, and where the font file is located on my Linux desktop. Is there any easy way to find that out? You can use a command-line tool called fc-list to find out currently loaded fonts. The command will list all available […]
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How to install Wine on Linux

Question: I need to run a Windows application on Linux, and for that, I would like to try Wine. How can I install Wine on [insert your Linux distro]? Wine is a popular user-space software program which allows one to run Windows applications on Linux. Wine provides a run-time environment for a Windows application by […]
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