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Top Forums Shell Programming and Scripting How to run script automatically on reboot as root user? Post 302770102 by Corona688 on Thursday 14th of February 2013 12:44:13 PM
Old 02-14-2013
If you have cron running, you can add this line to root's crontab by running crontab -e as root:

Code:
@reboot /path/to/myscript

to have cron run your script on boot.

Beware that cron gives a minimal path. You may want to add . /etc/profile as one of the first lines in your script to ensure it can find all the common commands.

If you want to change permissions on devices, do so with udev's own config files, not manually changing them with a script -- udev is the system that sets the permissions in the first place, and may undo manual changes on a whim. On my system they're in /etc/udev/rules.d/ but YMMV.

Perhaps a udev rule like this:

Code:
KERNEL=="bull", GROUP="mygroup", MODE=0660

...matching the name the kernel (not /dev) gives it, assigning it to 'mygroup', and giving it group read-write permissions.

Last edited by Corona688; 02-14-2013 at 01:51 PM..
 

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dtc_install_centos(8)					      System Manager's Manual					     dtc_install_centos(8)

NAME
dtc_install_centos - bootstrap a CentOS install to use in a chroot or VM SYNOPSIS
dtc_install_centos <install root> <yum environment> DESCRIPTION
This shell script is part of the dtc-xen package, generally to be used by the dtc panel to install a new a Xen VPS server. This script is called by dtc_reinstall_os when the user chooses to install the CentOS operating system. How it works: it generates a temporary yum configuration in the yum environment directory, that directs yum to act inside the install root instead of in the base system; then it kindly requests yum to install the basesystem, centos-release and yum packages onto it. Yum then uses the configuration to download the required (usually, security-updated) packages and then perform the RPM installation process under the install root. It requires both RPM and yum. It does work under Debian (it was developed in Ubuntu first). It should also work on RPM-based systems without destroying the system-wide RPM and yum configurations. OPTION
<install root> Target directory where CentOS will be deployed. Must exist beforehand. <yum environment> Directory where yum will store the repository manifests and configuration. Will be automatically created. Cached RPMs and manifests will be left, as usual, in a directory var/cache/yum inside the install root. EXAMPLE
dtc_install_centos /root/yum /xen/13 This will setup the operating system in /xen/13, with the CentOS configuration folder in /root/yum. BUGS
It's limited to CentOS 5 at the moment. It must be run as root. Under some circumstances, the installation process itself may kill processes running on the host machine. The chroot yum does should be sufficient to avoid this, but we haven't been able, yet, to ascertain why this fails sometimes. SEE ALSO
dtc_reinstall_os(8) VERSION
This documentation describes dtc_install_os version 0.3.1. See http://www.gplhost.com/software-dtc-xen.html for updates. dtc_install_centos(8)
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