Differences in Running 'wlsstart' Scripts with Absolute vs. Relative Paths in RHEL8 Linux

Differences between Running wlsstart Scripts with Absolute vs. Relative Paths in RHEL8 Linux

When it comes to running scripts in a Linux system, the path you use to call the script can make a difference. In this article, we will explore the differences between running the /etc/init.d/wlsstart script using the systemctl command and running the ./wlsstart script with a relative path in RHEL8 Linux.

Using the systemctl Command

The systemctl command is a system management command that is used to control the systemd system and service manager. It can be used to start, stop, and check the status of system services. When you run the /etc/init.d/wlsstart script using the systemctl command, it is treated as a system service and is managed by systemd.

# systemctl start wlsstart

Using a Relative Path

When you run the ./wlsstart script with a relative path, it is treated as a regular script and is not managed by systemd. This means that you will need to use the standard shell commands to start, stop, and check the status of the script.

# ./wlsstart start

Key Differences

There are several key differences between running the wlsstart script with the systemctl command and running it with a relative path:

• Management: When you run the script with the systemctl command, it is managed by systemd and can be controlled using the systemctl command. When you run the script with a relative path, it is not managed by systemd and must be controlled using standard shell commands.
• Persistence: Services run with the systemctl command are persistent and will start automatically when the system boots. Scripts run with a relative path are not persistent and will not start automatically when the system boots.
• Logging: Services run with the systemctl command are logged by systemd and can be viewed using the journalctl command. Scripts run with a relative path are not logged by systemd and must be logged using standard shell commands.

In conclusion, running the wlsstart script with the systemctl command and running it with a relative path have different behaviors and implications in a RHEL8 Linux system. By understanding these differences, you can make informed decisions about how to run your scripts and manage your system services.

References

• Systemd Basics in RHEL8
• Creating Systemd Unit Files
• Using Journalctl for Log Management

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