Is Nagios core compatible with Linux?
Yes, Nagios Core is compatible with Linux operating systems. It is also compatible with Windows, Solaris, AIX, HP-UX, Mac OS X and other Unix variants.
Date:2023-02-11
What are the different types of output in Linux?
1. Standard Output (STDOUT): This output is the default file where all output is printed and sent to the screen.
2. Standard Error (STDERR): This output is a separate file to be used for errors that occur during a command run.
3. Piping Output: This type of output allows us to take the output of one command and send it through a "pipe" (|) to another command.
4. Redirection Output: This type of output uses the > symbol to redirect our output to a certain file or device.
5. Null Output: This type of output is used when we don't want output to be printed or saved anywhere. We use the ">/dev/null" command to achieve this.
Date:2023-02-10
Why does my computer boot up to Windows instead of Linux?
If you have installed both Windows and Linux on the same computer, it is likely that your computer is configured to boot by default to Windows. To change the default boot option to Linux, you can enter your computer's BIOS or UEFI settings and modify the boot order.
Date:2023-02-10
What is Linux Mint live persistent?
Linux Mint Live Persistent is a Live operating system that runs from a USB or DVD, allowing you to work with the same data, settings, preferences, and programs every time you reboot your system. You don’t have to install Linux Mint on your hard drive, but you can save files, settings and preferences to the USB or DVD using the persistence feature. This feature allows you to have a live version of Linux Mint wherever you may go and use it on any computer.
Date:2023-02-10
How to create a git repository in Linux?
1. Log into the server where you’d like the Git repository to be created.
2. Change directory to the directory that will act as the parent directory for the repository.
3. Execute the command ‘git init’ to create the repository.
4. Execute the command ‘git add *’ to stage all the files in the directory for tracking.
5. Execute the command ‘git commit -m “Initial Commit”’ to make the initial commit of files.
6. Execute the command 'git push origin master' to push the files to any remote repository.
7. Push any new updates with the same commands Regularly.
Date:2023-02-09
Does Red Hat Enterprise Linux have a repo?
Yes, Red Hat Enterprise Linux has its own software repository, Red Hat Network. It provides access to the latest Red Hat software packages, as well as security updates, bug fixes, and other critical software updates. With Red Hat Network customers can download packages and keep their RHEL installations updated.
Date:2023-02-09
How do I delete a file in Ubuntu?
1. Open the terminal on your Ubuntu system.
2. Use the rm command to delete a file. For example, type the command “rm filename” to delete the file “filename” in the current directory.
3. To delete a folder, use the command “rm –r folder_name” to delete the folder “folder_name” and all its contents.
NOTE: Be careful when using the rm command as it deletes files and folders permanently and they cannot be recovered.
Date:2023-02-09
How to get information about process in Linux?
You can use the command line utility ‘ps’ which is used to display information about processes.
What is the syntax?
The syntax for running the 'ps' command is 'ps <options>'.
The options that can be used depend on which version of Linux you are using, but some useful options include '-e' to display all processes, '-f' to display a full listing, '-u' to display information about a specific user's processes, and 'aux' to display all running processes.
Date:2023-02-08
Does Visual Studio run on Linux?
No, Visual Studio does not run on Linux. Visual Studio is only available on Windows and MacOS.
Date:2023-02-08
How do I suppress standard output and error message in Linux?
You can suppress standard output and error messages in Linux using standard output and error redirection to /dev/null. To do this, type the following syntax into the terminal:
command > /dev/null 2>&1
This syntax redirects both the standard output and standard error to the "/dev/null" device, which is a special file which always has a size of 0 bytes and discards all data written to it, so that nothing is printed to the terminal.
Date:2023-02-08
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How to identify duplicate files on Linux?
1. Use the 'fdupes' command-line tool: Fdupes scans your filesystem for duplicate files and directories, and then presents it so you can review the found duplicates.
2. Use the 'Dupemerge' command-line tool: Dupemerge helps you identify and delete duplicate files on your Linux system and can also sync them between two different locations.
3. Use the 'Duplicity' command-line tool: Duplicity is a powerful command-line tool for scanning your filesystem for duplicates and then allowing you to remove them.
4. Use the 'rmlint' command-line tool: Rmlint is a fast and efficient command-line tool that helps you identify and delete duplicate files and folders on your system.
5. Use a graphical tool: If command-line tools seem too complicated, you can always use a graphical tool such as fslint, dupin, or krename to scan your filesystem and delete duplicates.
Does Red Hat Enterprise Linux have a repo?
Yes, Red Hat Enterprise Linux has its own software repository, Red Hat Network. It provides access to the latest Red Hat software packages, as well as security updates, bug fixes, and other critical software updates. With Red Hat Network customers can download packages and keep their RHEL installations updated.
How to disable Apache modules on CentOS 7?
1. Log into your server as the root user.
2. Change directory to /etc/httpd/conf.d/
3. Edit the configuration file for a specific module or for all modules.
4. Locate the LoadModule line for the module you wish to disable.
5. Comment out the line by adding a ‘#’ sign in front of it.
6. Restart Apache to apply the changes:
sudo systemctl restart httpd.service
7. Verify that the module has been disabled by consulting the error log:
tail /var/log/httpd/error_log
How to enable disable IP forwarding in Linux?
1. To enable IP forwarding on Linux you need to add or edit the following line to your sysctl configuration file located at /etc/sysctl.conf
net.ipv4.ip_forward = 1
2. To apply the changes immediately, run the following command:
sudo sysctl -p
3. To disable IP forwarding on Linux, repeat step number 1 and change the value of the line to 0.
net.ipv4.ip_forward = 0
Why does my computer boot up to Windows instead of Linux?
If you have installed both Windows and Linux on the same computer, it is likely that your computer is configured to boot by default to Windows. To change the default boot option to Linux, you can enter your computer's BIOS or UEFI settings and modify the boot order.
How do I start a PHP server on Ubuntu?
To start a PHP server on an Ubuntu machine, you need to use the sudo command to grant root privileges to run the server. You can then use the following command:
php -S localhost:8000 -t /var/www/html
This command starts a PHP server on port 8000 and serves files from the /var/www/html directory.
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