Yes, Linux distributions have a firewall built into the kernel by default. The iptables utility is usually used to administer the firewall.

1. To install Tomcat on Linux and Ubuntu systems, you will need to first update your system. Use the following command in your terminal window to update your system: sudo apt-get update 2. Once your system is updated, download the Tomcat .tar.gz archive using wget command from tomcat.apache.org: wget http://apache.mirrors.ionfish.org/tomcat/tomcat-8/v8.0.53/bin/apache-tomcat-8.0.53.tar.gz 3. Now, create a directory to store Tomcat archive: mkdir ~/tomcat 4. Move the downloaded Tomcat tar to the newly created directory: mv apache-tomcat-* ~/tomcat 5. Extract the tar file in the tomcat directory: cd ~/tomcat tar xvfz apache-tomcat-*tar.gz 6. Tomcat is now ready to be used. To start Tomcat server, open your terminal and execute the following command: cd ~/tomcat/apache-tomcat-*/bin ./startup.sh 7. You can access the Tomcat server in your browser, using the URL: http://localhost:8080 8. To stop Tomcat server, type the following command in your terminal: ./shutdown.sh

An inode number (also known as "i-number") is a data structure found in Unix and Linux-based file systems that stores all the information about a file except its name and its actual data. The inode number uniquely identifies the file within the file system and contains information such as the file type, permissions, ownership, size, and location of the data blocks.

Yes, Steam Deck is compatible with Linux. It is available in both the Steam and Itch.io stores, and can be used on a variety of operating systems, including Linux.

1. Create a Full Backup of Your Linux File System To back up all files, directories, and system data from your Linux file system, you can use the built-in command line utility, tar (tape archive). Using tar, you can easily create a full backup of your file system and save it to an external drive. To begin, use the following command to make a copy of the Linux system file system in the same PATH you are currently in. $ tar -cvpf /backup/backup.tgz / The -cvpf flags indicate that tar should create (-c) a verbose copy (-v) with preservation (-p) of ownership, permissions and all directories, files, and link (-f) from the root directory / . The output file (/backup/backup.tgz) is where the tar archive containing the backup will be stored. 2. Use the rsync Command Another option to back up your file system is to use the rsync command. rsync is a great utility for quickly backing up files and directories locally or remotely. To back up a complete system file system, you can use the rsync command as indicated below: $ rsync -azvh --delete / /backup/rsync_backup The switches and flags used with rsync are: archive (-a), compresses file data (-z), is verbose (-v), and provides information on a transfer’s progress (-h). The additional --delete flag helps ensure that all files and directories in the source are also included in the backup without needing to manually list each one. 3. Create a Clone of Your Linux File System Another option for backing up your entire Linux file system is to create a clone of the file system using a command-line based disk cloning utility such as partclone. Partclone is a utility used for creating disk images or cloning partitions for backup purposes. The partclone command used for cloning a filesystem is as follows. $ partclone.ext4 -c -s /dev/sda1 -o /backup/filesystem_clone.img The flags used in this command are used to clone (-c) a source partition (-s) located at /dev/sda1. The clone output (-o) is stored in /backup/filesystem_clone.img. Once the cloning process completes, the cloned image can be mounted and used to restore the original file system. Conclusion Backing up your Linux file system is an important part of system administration. Thankfully, with a few simple commands, you can easily make a complete backup of your Linux file system just in case it ever gets corrupted or you need to restore a file or two.

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)