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This article mainly introduces what is the difference between unix and linux, which can be used for reference by friends who need it. I hope you will learn a lot after reading this article. Next, let the editor take you to learn about it.

What is the difference between Linux and UNIX operating systems?

UNIX is a copyrighted name that only allows large companies to use UNIX copyrights and names, so IBM AIX and Sun Solaris as well as HP-UX are UNIX operating systems. The Open Group holds the UNIX trademark of trust in the industry and manages the UNIX trademark licensing program.

Most UNIX systems are commercial in nature.

Linux is a UNIX clone

However, if you consider the Portable operating system Interface (POSIX) standard, Linux can be considered a UNIX. Refer to the official Linux kernel README file:

Linux is a Unix clone written from scratch by Linus Torvalds with the help of a loose team of hackers on the network. It is designed to achieve POSIX compliance.

However, "Open Group" does not approve of building "quasi-Unix" and believes that it abuses their UNIX trademark.

Linux is just a kernel.

Linux is just a kernel. All Linux distributions include GUI system + GNU utilities (such as cp,mv,ls,date,bash) + installation and management tools + GNU c / c + compiler + editor (vi) + and various applications (such as OpenOffice,Firefox). However, most UNIX operating systems are considered a complete operating system because all operating systems come from a single source or vendor.

As I said before, Linux is just a kernel, and the Linux distribution makes it a fully available operating system by adding a variety of applications. Most UNIX operating systems come with AZ programs, such as editors, compilers, etc. For example, HP-UX or Solaris comes with the AZ program.

Licenses and fees

Linux is free. You can download it from Internet or redistribute it under a GNU license. You will see the best community support for Linux. Most UNIX-like operating systems are not free (but this is changing rapidly, such as OpenSolaris UNIX). However, some Linux distributions (such as Redhat / Novell) provide additional Linux support, consulting, bug fixes, and additional training.

Easy to use

Linux is considered to be the most user-friendly UNIX operating system. It can easily install sound cards, flash players and other desktop devices. However, Apple OS X is the most popular UNIX operating system for desktops.

Security firewall software

Linux comes with open source netfilter / iptables-based firewall tools to protect your servers and desktops from crackers and hackers. The UNIX operating system comes with its own firewall product (for example, Solaris UNIX comes with an ipfilter-based firewall), or you need to purchase third-party software, such as Checkpoint UNIX Firewall.

Backup and recovery software

UNIX and Linux come with a different set of tools for backing up data to tape and other backup media. However, they all share some common tools, such as tar,dump / restore and cpio.

File system

Linux supports and uses ext3 or ext4 file systems by default.

UNIX comes with various file systems, such as jfs,gpfs (AIX), jfs,gpfs (HP-UX), and jfs,gpfs (Solaris).

System management tools

1.UNIX comes with its own tools on HP-UX, such as SAM.

2.Suse Linux comes with Yast

3.Redhat Linux comes with its own gui tool, redhat-config- *.

However, editing text configuration files and typing commands are the most common options for sys administration under UNIX and Linux.

System startup script

Almost every version of UNIX and Linux comes with system initialization scripts, but they are located in different directories:

HP-UX-/ sbin/init.dAIX-/ etc/rc.d/init.dLinux-/ etc/init.d

End-user perspective

For the average end user, there is not much difference. They will use the same shell (such as bash or ksh) and other development tools, such as Perl or Eclipse development tools.

System administrator perspective

Again, there is not much difference among system administrators. However, you may notice various differences when doing the following:

1. Software installer

two。 Hardware device name

3. Various administrative commands or utilities

4. Software RAID devices and mirroring

5. Logical volume management

6. Package management

7. Patch management

UNIX operating system name

HP-UXIBM AIXSun SolairsMac OS X.IRIX

Linux distribution (operating system) name

Redhat Enterprise LinuxFedora LinuxDebian LinuxSuse Enterprise LinuxUbuntu Linux

Common problems between Linux and UNIX

The two share many common applications, such as:

1.GUI, File and Windows Manager (KDE,Gnome)

2.Shells (ksh,csh,bash)

3. Various office applications, such as OpenOffice.org

4. Development tools (perl,php,python,GNU c / c + + compiler)

5.Posix interface

UNIX Desktop Screenshot

Figure 01:UNIX Desktop-IRIX 6.5Desktop

Linux Desktop Screenshot

Figure 02:Linux KDE Desktop Environment

UNIX and Linux Hardwar

Commercial UNIX hardware has more advanced initial boot options, such as:

Decide how to start

Check the health of the system

Set hardware parameters, etc.

BIOS, the PC standard used by Linux, has few of these features. Compared with Linux server systems, UNIX hardware or servers are quite expensive.

Thank you for reading this article carefully. I hope the editor will share what the difference between unix and linux is helpful to everyone. At the same time, I also hope that you will support us, pay attention to the industry information channel, and find out if you encounter problems. Detailed solutions are waiting for you to learn!

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