In Unix, signals are used to control the state of a machine. They are numbered from zero to six, and define what programs can run once the OS has been booted up. The SIGHUP signal is often used to restart daemon programs that are running when the terminal controlling their process closes. This signal was …
Others
The clipboard is a memory section of your computer that stores data you copy and paste. This data is stored until you log off the system. It can be anything, from text to images and even videos. You can also use the clipboard to send and receive files. The clipboard is a useful feature of …
The fork and exec system calls are used to start another program as a child of the current process. Shells typically perform this sequence when they run programs. For example, if you type “find” in the shell, the child process will load the find program into memory, set up standard I/O, and then run. Afterward, …
How to open an Appimage file in Linux? An AppImage file is a compressed image that contains all the libraries and dependencies required by the application. To run the application, the user must grant execute permission to the file. Once this permission has been granted, he or she can double-click on the AppImage and it …
Sometimes a software update can take a very long time to download. This is due to several factors, including a combination of Internet connectivity and Apple servers being overloaded. Downloading macOS Big Sur may take a long time, so be patient. If the download time is longer than usual, you can try restarting your Mac …
Linux has two basic file systems: initrd and initramfs. Initrd is the real static device that boots up the operating system, while ramfs is the cpio-based file system that boots the kernel. They are both used to load files and manage memory. Initramfs resolves the memory usage problem caused by initrd. An initramfs is a …
You can crop an image or video in Ubuntu with the free graphic manipulation tool GIMP. Ubuntu comes with this program by default. You can launch GIMP by choosing Application > Graphics > GIMP Image Editor. Cropping an image or video requires three steps: Open the image, press Shift+C (to enable the crop tool in …
In order to get your computer to boot up, you must clear the CMOS memory. Your CMOS chip stores the BIOS settings and is a good place to start when the BIOS is having problems. If the CMOS memory has become corrupted, resetting it is necessary. This can be done through your BIOS or by …
Why Cant You Install Macos on PC? There are a few possible reasons why it might not be possible. You can make it work by cleaning out your hard drive and freeing up storage. You can also use a free app such as CleanMyMac X to clean out unwanted files. After doing so, follow the …
A question mark is a special character in Linux. In bash, it can match any character, but it’s also used as a wildcard. The question mark, also known as “%”, is typically used in filenames to match arbitrary strings of characters. In the same way that asterisks match zero or more characters, the question mark …