Is UNIX and Linux Both Are same?

[KapilAsdhir]

Is UNIX and Linux Both Are same?

[KapilAsdhir]

No,Both are different.But Both are writen in POSIX standards , thats why lots of authors used to refer as same, but strictly saying both are differnt.

[nobita_deptrai]

Although some Linux distributions come with a standard system management tool, such as SUSE's YaST, there is not a Linux-wide standard on tools for system management. Text files and command-line tools are available, but these can be cumbersome and sometimes difficult to remember. Each commercial version of UNIX has its own separate management interface. From this interface, aspects of the entire system can be manipulated and altered. One example of this is the System Administration Manager (SAM) on HP-UX.

From within SAM, there are modules where:

Users or groups can be managed.
Kernel parameters can be modified.
Networking is configured.
Disks are configured and initialized.
X server configuration can be changed.

This tool is well-written and incorporates well with the back-end text files. There is no such tool for Linux. Even SUSE's YaST is not nearly as complete, or compatible.

One aspect of UNIX and Linux that appears to be different for almost every version of UNIX and Linux is the location of system initialization scripts. Luckily /sbin/init and /etc/inittab are in standard locations. But beyond that, all the startup scripts are in different locations. Table 2 lists the location of system initialization scripts for various UNIX and Linux distributions.