Netplan static IP on Ubuntu configuration.How to enable/disable firewall on Ubuntu 18.04 Bionic Beaver Linux.How to install Tweak Tool on Ubuntu 20.04 LTS Focal Fossa Linux.Linux IP forwarding – How to Disable/Enable.How to use bash array in a shell script.AMD Radeon Ubuntu 20.04 Driver Installation.How to install missing ifconfig command on Debian Linux.Ubuntu 20.04 Remote Desktop Access from Windows 10.How to find my IP address on Ubuntu 20.04 Focal Fossa Linux.How to install the NVIDIA drivers on Ubuntu 20.04 Focal Fossa Linux. As a software developer you will also work with local sockets and named pipes. ConclusionĪs a system administrator you will mostly work with regular files, directories block and character devices. To remove symbolic link we can use unlink or rm command. Lrwxrwxrwx 1 lubos lubos 5 Jan 10 14:42 file2 -> file1 To create symbolic soft link we can use ln -s command: $ echo file1 > file1 Furthermore, hard links cannot cross file systems and partitions. The difference between hard and soft links is that soft links use file name as reference and hard links use direct reference to the original file. Symbolic link can be though of as a pointer to an original file. With symbolic links an administrator can assign a file or directory multiple identities. They can be created by the mknod command and removed with the rm command. Similarly as Local sockets, named pipes allow communication between two local processes. Sockets can be created by socket system call and removed by the unlink or rm commands. Srw-rw-rw- 1 root root 0 Jan 4 10:13 /dev/log Generally, they are used by services such as X windows, syslog and etc. Local domain sockets are used for communication between processes. $ ls -ld /dev/sdaīrw-rw- 1 root disk 8, 0 Jan 4 10:12 /dev/sda They mostly govern hardware as hard drives, memory, etc. Block Deviceīlock devices are similar to character devices. In this case the character device is the vmware module device. For example: $ ls -ld /dev/vmmonĬrw- 1 root root 10, 165 Jan 4 10:13 /dev/vmmon In this case you need to use a command: $ rm -r FileTypes/ Character deviceĬharacter and block device files allow users and programs to communicate with hardware peripheral devices. When trying to remove directory with the rmdir command, which contains additional files you will get an error message: rmdir: failed to remove `FileTypes/': Directory not empty To remove empty directory use the rmdir command. Directory can be created with the mkdir command:ĭrwxrwxr-x 2 lubos lubos 4096 Jan 10 13:14 FileTypes/Īs explained earlier, directory can be identified by “d” symbol from the ls command output. To remove a regular file you can use the rm command: $ rm ĭirectory is second most common file type found in Linux. The first character of the ls command, in this case “-“, denotes the identification code for the regular file. You can create a regular file with the touch command: $ touch It governs all different files such us text files, images, binary files, shared libraries, etc. The regular file is a most common file type found on the Linux system. Let us have a look at a short summary of all the seven different types of Linux file types and ls command identifiers: It is important to point out that Linux file types are not to be mistaken with file extensions. In this case it is “-“, which means “regular file”. Ls command will show the file type as an encoded symbol found as the first character of the file permission part. Here is an example output of the above command. There is only 1 command you need to know, which will help you to identify and categorize all the seven different file types found on the Linux system. This short article will help you to recognize all the 7 different file types within the Linux operating system. However, the Linux operating system has more to offer in terms of file types as it also includes another 5 file types. The most used and obvious file types are regular files and directories. When navigating the Linux file system you are sure to encounter different file types.
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