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Where is the cache located in Linux?
The cache in Linux is usually stored in the directory "/var/cache". This can vary from distribution to distribution, though.
Date:2023-02-19
How to monitor who changed or accessed a file on Linux?
1. Track Last Access Time of a File/Directory: You can use the “stat” command to view the last accessed time of a file. 2. Use System Logs: If you have logging enabled by your system, you can use the log viewer application such as Logwatch or Logcheck to view the recent user activities and changes. 3. File Access Auditing: You can use the auditing program such as AIDE, Tripwire, checksum to monitor any changes or access to sensitive files and directories. 4. Use SUID/SGID Bits to Monitor Changes: Set the SUID/SGID bits on a file and get detailed information about who changed the file permissions, ownership or content. 5. Track Changes Using Version Control System: Use version control system to keep track of changes and who modified specific part of a file. Popular version control systems for Linux are GIT and SVN.
Date:2023-02-19
How to set up local yum repositories on CentOS 7?
1. Install the createrepo package, which will create the local Yum repository: - sudo yum install createrepo 2. Create a directory for storing the packages for your repository, for example, /var/myrepo: - sudo mkdir /var/myrepo 3. Copy the necessary package files from existing repositories to your local repository: - sudo cp -Rp /etc/yum.repos.d/*.repo /var/myrepo/ 4. Generate the metadata for your local repository: - sudo createrepo /var/myrepo 5. Create a new repository file in /etc/yum.repos.d by adding the following lines: [mylocalrepo] name=My Local Repository baseurl=file:///var/myrepo enabled=1 gpgcheck=0 6. Finally, update your repository cache: - sudo yum makecache
Date:2023-02-19
What are the repositories for Red Hat Enterprise Linux 8?
1. Applicability Repository (AppStream) 2. BaseOS Repository (BaseOS) 3. Supplementary Repository (Supplementary) 4. Upper Compatibility Repository (HighAvailability) 5. OpenShift Repository (OpenShift) 6. Ceph Storage Repository (Ceph Storage) 7. Resilient Storage Repository (Resilient Storage) 8. Falcon Repository (Falcon) 9. CodeReady Builder Repository (CodeReady Builder) 10. CodeReady Toolchain Repository (CodeReady Toolchain)
Date:2023-02-19
What is opmnctl in Linux?
OPMNCTL is the command-line tool used to manage Oracle Process Manager and Notification Server (OPMN) in Linux. It is used to start, stop, and monitor Oracle Fusion Middleware components. It is also used to manage port numbers and enable JMX connections for WebLogic and SOA components.
Date:2023-02-19
How much RAM do I need for Ubuntu?
The minimum RAM required to run Ubuntu 18.04 is 2 GB, but 4 GB is recommended for best performance.
Date:2023-02-19
Can You dualboot Ubuntu and win10?
Yes, you can dual-boot Ubuntu and Windows 10. There are many tutorials available online to help you set up a dual boot system.
Date:2023-02-17
What is a page frame in Linux?
A page frame in Linux refers to a fixed-length region of physical memory that holds individual pages of memory. Each page frame is the smallest unit of memory that is directly addressed by the memory management hardware. The operating system allocates page frames to various processes in order to store their active data and keep track of the page frames that have been allocated and the processes to which they have been allocated.
Date:2023-02-17
How do you find the PID of a process in Linux?
To find the PID of a process in Linux, use the ps command. It will list the current processes running on a system. Example: ps -aux This command returns a list of running processes, as well as the PID of each process.
Date:2023-02-16
What is the sepolicyfile in SELinux?
The sepolicyfile is an SELinux policy file. It defines the security controls applied to objects within the system, such as users, processes, files, directories, and applications. These controls are used to enforce the security rules enacted by the system administrator and to ensure that all access to system resources is authorized and within acceptable bounds.
Date:2023-02-16

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How to install and configure NFS server on Linux?
1. Install the NFS Server Package Before you can start configuring the NFS server, you first need to install the package on your Linux system. To do this, you can use the package manager of your Linux distribution. For example, on Ubuntu and Debian systems, you can use the apt command; sudo apt install nfs-kernel-server On CentOS, RHEL or Fedora systems, you can use the yum command; sudo yum install nfs-utils 2. Configure the NFS Exports Once the NFS server has been installed, you can configure its exports. An export is a file path which will be shared by the NFS server. To configure your exports, edit the file /etc/exports. For example, if you want to share the directory /var/nfs, you can add the following line to the /etc/exports file; /var/nfs *(rw,sync,no_root_squash,no_subtree_check) 3. Start the NFS Server Once you have configured your NFS exports, you will need to start the NFS server. You can do this using the systemctl command; sudo systemctl start nfs-server 4. Mount the NFS Shares Once the NFS server is running, you can then mount the exported NFS shares on a client system. To mount the NFS share, you will need to specify the NFS server IP address and exported file path; sudo mount 192.168.1.10:/var/nfs /mnt
How fast is -delete in Linux?
The speed of the -delete command in Linux varies depending on factors such as the amount of data that needs to be deleted and the speed of the system on which the command is being used. Generally, the -delete command should delete data quickly, with most operations finishing within a few seconds.1. Download the latest version of the fast command-line interface (CLI) utility from the official project website at: https://github.com/fastify/fastify/releases 2. Extract the downloaded fast-cli-.tar.gz file using the tar command as follows: $ tar -xzf fast-cli-.tar.gz 3. Change directory to the extracted fast-cli- folder using the cd command as follows: $ cd fast-cli- 4. Install the fast command-line interface utility using the following command: $ sudo npm install -g ./ 5. Verify the fast installation by checking the version of theFast CLI as follows: $ fast --versionThis question is impossible to answer definitively, as there are many factors that impact the performance of a Linux distro. However, some of the fastest Linux distros include Arch Linux, Solus, Manjaro, GParted Linux, and MX Linux.The average boot time for Linux varies widely based on the type of system, the load, and individual system setup. Generally speaking, a fresh install of an up-to-date operating system can boot in less than a minute on a modern PC, while a loaded system with startup processes can take anywhere from two minutes to several minutes to boot.
Is Oracle Linux feasible for a desktop?
Yes, Oracle Linux is a viable option for a desktop or laptop as it is a reliable, secure and cost-effective operating system that supports a wide range of hardware and software. The architecture is based on Red Hat Enterprise Linux which is well known for its stable and reliable performance. Additionally, Oracle Linux provides a series of tools and utilities to customize and manage system configurations, as well as user interface customization.
Is it possible to dual boot Ubuntu?
Yes, it is possible to dual boot Ubuntu. It is very straightforward to set up a dual boot environment with Ubuntu, and most computers support this type of operating system configuration.
How much RAM does Ubuntu need?
Ubuntu typically requires a minimum of 2GB RAM, although 4GB RAM is recommended for better performance.
Can You dualboot Ubuntu and win10?
Yes, you can dual-boot Ubuntu and Windows 10. There are many tutorials available online to help you set up a dual boot system.

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