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Run command as root at Linux startup

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poiuytrez Posted messages 42 Status Member -  
 rdan -
Hello, I am on Fedora Core 4, I would like to run a command or a script at system startup on Linux that requires root permissions. How should I do it?
Thank you for your help.

7 answers

  1.
    lami20j Posted messages 21506 Registration date   Status Moderator, Security Contributor Last intervention   3 571
     
    Hi, It seems the file /etc/init.d/rc.local is present on FC4 you just have to type as root 
    echo "yum -y upgrade" >> /etc/init.d/rc.local
    on reboot the command will be executed However I agree with crabs. This is not a good idea to run an upgrade this way. Besides, doing an upgrade just to be able to brag that I have the latest version of the software is childish. -- lami20j
    3
  2. crabs Posted messages 909 Status Member 507
     
    Hi,
    I don’t have FC4, but I have some old RH memories.
    You need root rights.
    Everything happens in the /etc/init.d directory and the rc(x).d (x) corresponding to the machine’s run level
    watch how the folders are built with 'ls -il'.
    For info everything starts from /etc/inittab...
    In the rc.d:
    a script that starts with K -> stop the service: run the script with the stop parameter
    a script that starts with S -> start the service: run the script with the start parameter
    Then 2 digits that allow sorting in ascending order and thus obtain the order
    of starting the stop scripts for the service, then those of starting

    Cheers, crabs
    --
    ..., I think Slackware sounds better than 'Microsoft,'
    -- Patrick Volkerding - founder and maintainer of Slackware
    1
  3. rdan
     
    Hello, if a single script is present in all rc*.d folders, it means it is started during the loading of modes 1 to 5 normally, so it would be launched 5 times if mode 5 is loaded, yet that's probably not the case, where is the error?
    1
  4. poiuytrez Posted messages 42 Status Member 1
     
    Thank you but I don’t want to launch a service at startup; I actually just want to run the command, as root:
    #yum -y upgrade

    Thank you!
    0
  6. crabs Posted messages 909 Status Member 507
     
    Hello,
    In my statement, service was used in the broad sense.
    It can be a script that launches a program...
    Personally, at each startup, I run a command that synchronizes my clock with an NTP server, it's just a command put in a script.

    Take the trouble to at least look in these startup areas.

    Otherwise isn't it a bit dangerous to launch an OS update without the possibility to take control? Do some updates not require restarting certain services or even a machine reboot?
    --
    ..., I think Slackware sounds better than 'Microsoft,'
    -- Patrick Volkerding - founder and maintainer of Slackware
    0
  7. poiuytrez Posted messages 42 Status Member 1
     
    Okay well I’m going to use this technique... In fact I knew it but I thought there was a cleaner method.

    Thanks @+
    0