This table gives us a lot of information, including the command used to run the process that owns the file, the PID, the user who owns the process, the type and size of the file, and more. lsof (or list of open files) is a handy command to quickly see the list of open files and associated processes.įigure 6 shows a truncated list of the lsof command output. So, any issues with hardware, or even software on a Linux machine has to be debugged using files. For example, the network adapters-and even any USB accessory that we plug in-are all controlled using files. By following any of these methods, you can check the available memory along with lots of other useful memory statistics of your Ubuntu 20.04 system.In Linux, everything depends on files. You can also execute these methods on any other Linux distribution of your choice. In this article, we shared with you four different methods of checking the available memory in Ubuntu 20.04. The free memory and the free swap memory are highlighted in the following image: However, there is no dedicated entry for the available memory in the output of this command. The output of this command is very much similar to the output shown in Method # 3. To use this command for checking the available memory in Ubuntu 20.04, you will have to perform the following steps:Īfter launching the terminal in Ubuntu 20.04 by looking for it in the Activities menu, you need to run the command stated below in your terminal: vmstat –s The “vmtstat” command in Ubuntu is used to display all the virtual memory statistics. Method # 4: Using the “vmstat” command along with the “-s” Flag: Also, there is a dedicated entry for the available memory in the output of this command. However, we have highlighted the free memory and the free swap memory entries in the image shown below. In the output of this command, there will be several memory statistics available that you can examine as per your needs. Here, the “cat” command has been used to display the contents of the /proc/meminfo file on the terminal. For using this file to check the available memory in Ubuntu 20.04, you should perform the following steps:Īfter launching the terminal in Ubuntu 20.04 by looking for it in the Activities menu, you need to run the following command in your terminal: cat /proc/meminfo The /proc/meminfo file in Ubuntu contains all the information about the memory usage of your system. Method # 3: Using the “cat” Command with “/proc/meminfo”: Free memory and free swap memory are also highlighted in the image shown below. Running this command will display the output which contains information such as free memory, total memory, used memory, etc. To use this command for checking the available memory in Ubuntu 20.04, you should perform the steps stated below:Īfter launching the terminal in Ubuntu 20.04 by looking for it in the Activities menu, you need to run the following command in your terminal: free –m The “free” command in Ubuntu is used to display the current memory usage of your system. Method # 2: Using the “free” command along with the “-m” Flag: The highlighted portion represents the free memory and the free swap memory respectively. Out of all that information, the chunk with which we are concerned is highlighted in the following image. Running this command will display a detailed output on the terminal. To use this command for checking the available memory in Ubuntu 20.04, you should essentially perform all the following steps:Īfter launching the terminal in Ubuntu 20.04 by looking for it in the Activities menu, you need to run the command stated below in your terminal: top The “top” command is used in Ubuntu to display your CPU and memory statistics along with the information about the currently running processes. Below we have listed down the four most effective methods of doing so. There are different methods of checking the available memory in Ubuntu 20.04. Methods of Checking the Available Memory in Ubuntu: Note: We have demonstrated the methods of checking the available memory using Ubuntu 20.04. Today we intend to share with you all the different methods of checking the available memory in Ubuntu. That is why it is extremely important for a user in general and a system administrator, in particular, to frequently monitor the available memory. This memory can hold a process only if it has a sufficient amount of space available to accommodate that process. The main job of RAM or memory in any computer system is to fetch the programs from the hard disk, hold them temporarily, schedule their processing, and then send them one by one to the CPU for execution.
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