


Running the program as root user under centos prompts insufficient permissions
Problem:
When running a program installed under LINUX, root prompts that the permissions are insufficient.
Solution:
1. Check file permissions
#ls -l filename
Result: (Recommended tutorial: centos tutorial)
-rw-rw-rw- 1 root root ....
means that no user has executable permissions (even the root user).
2. Change permissions
#chmod a+x filename
Recommended related video tutorials: linux video tutorial
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CentOS stands out among enterprise Linux distributions because of its stability, security, community support and enterprise application advantages. 1. Stability: The update cycle is long and the software package has been strictly tested. 2. Security: Inherit the security features of RHEL, update and announce in a timely manner. 3. Community support: a huge community and detailed documentation to respond to problems quickly. 4. Enterprise applications: Support container technologies such as Docker, suitable for modern application deployment.

Alternatives to CentOS include AlmaLinux, RockyLinux, and OracleLinux. 1.AlmaLinux provides RHEL compatibility and community-driven development. 2. RockyLinux emphasizes enterprise-level support and long-term maintenance. 3. OracleLinux provides Oracle-specific optimization and support. These alternatives have similar stability and compatibility to CentOS, and are suitable for users with different needs.

CentOS is suitable for enterprise and server environments due to its stability and long life cycle. 1.CentOS provides up to 10 years of support, suitable for scenarios that require stable operation. 2.Ubuntu is suitable for environments that require quick updates and user-friendly. 3.Debian is suitable for developers who need pure and free software. 4.Fedora is suitable for users who like to try the latest technologies.

Alternatives to CentOS include AlmaLinux, RockyLinux, and OracleLinux. 1.AlmaLinux and RockyLinux rebuild RHEL 1:1, providing high stability and compatibility, suitable for enterprise environments. 2. OracleLinux provides high performance through UEK, suitable for users who are familiar with the Oracle technology stack. 3. When choosing, stability, community support and package management should be considered.

CentOS alternatives include RockyLinux, AlmaLinux, and OracleLinux. 1. RockyLinux and AlmaLinux provide stable distributions compatible with RHEL, suitable for users who need long-term support. 2. CentOSStream is suitable for users who focus on new features and development cycles. 3. OracleLinux is suitable for users who need enterprise-level support.

CentOS needs alternatives because CentOSStream no longer provides long-term support. Alternative options include: 1. RockyLinux, which provides 10 years of life cycle support, suitable for users who need stability. 2.AlmaLinux also provides 10 years of support and has strong community support. 3. OracleLinux, provides RHEL-compatible version, and flexible life cycle management.

The end of CentOS has had a significant impact on users, with users having the option of RHEL, AlmaLinux, Debian or Ubuntu as alternatives. 1. The migration cost is high, requiring time and money. 2. Community division affects open source projects. 3.RHEL provides commercial support, but it is costly. 4.AlmaLinux is similar to CentOS and has low migration costs. 5. Debian and Ubuntu need more time to adapt.

CentOS is suitable as an enterprise-class server operating system because it is stable, secure and free. 1) It is based on RHEL and provides high compatibility with RHEL. 2) Use yum for package management to ensure that the software is easy to install and update. 3) The community regularly releases security patches, with a support cycle of up to 10 years.


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