How to add link to a device permanently

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Using the command: ln -s /dev/ttyUSB0 /dev/gps0 I link the device gps0 to ttyUSB0. The problem is after rebooting the machine, the created link will disappear and I should create it again. Is there any way to create the link permanently?



The OS is CentOS 7.










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    Using the command: ln -s /dev/ttyUSB0 /dev/gps0 I link the device gps0 to ttyUSB0. The problem is after rebooting the machine, the created link will disappear and I should create it again. Is there any way to create the link permanently?



    The OS is CentOS 7.










    share|improve this question























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      Using the command: ln -s /dev/ttyUSB0 /dev/gps0 I link the device gps0 to ttyUSB0. The problem is after rebooting the machine, the created link will disappear and I should create it again. Is there any way to create the link permanently?



      The OS is CentOS 7.










      share|improve this question













      Using the command: ln -s /dev/ttyUSB0 /dev/gps0 I link the device gps0 to ttyUSB0. The problem is after rebooting the machine, the created link will disappear and I should create it again. Is there any way to create the link permanently?



      The OS is CentOS 7.







      centos symlink udev






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      asked Oct 1 at 13:33









      Soheil Pourbafrani

      1032




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          2 Answers
          2






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          1
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          Given the name of your device --- /dev/gps0 --- I assume that you're dealing with some sort of GPS device. If so, your best bet would be to define a custom udev rule that matches the device and creates a device with the name that you want. Arch Linux's udev wiki might help to get you started; I don't think there will be fundamental differences between that and CentOS.






          share|improve this answer




















          • Thanks, I read about the udev. Could you pls give me an example?
            – Soheil Pourbafrani
            Oct 1 at 13:55






          • 1




            Unfortunately I don't have a Linux machine in front of me. Did you see the wiki to which I referred you? The bit that talks about 83-webcam.rules is very similar to what you're after. You'll want to use udevadm to find out properties of your GPS (e.g., vendor, product id), and create a rule that generates the symlink.
            – Andy Dalton
            Oct 1 at 14:00

















          up vote
          0
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          Add it /etc/rc.local. Make sure /etc/rc.local is executable.



          vim /etc/rc.local
          ln -s /dev/ttyUSB0 /dev/gps0

          ls -l /etc/rc.local
          lrwxrwxrwx. 1 root root 13 Sep 26 05:46 /etc/rc.local -> rc.d/rc.local





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          • I did but after reboot, it didn't create the link. Maybe because the command needs sudo privileges
            – Soheil Pourbafrani
            Oct 1 at 13:57










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          2 Answers
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          2 Answers
          2






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          active

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          up vote
          1
          down vote













          Given the name of your device --- /dev/gps0 --- I assume that you're dealing with some sort of GPS device. If so, your best bet would be to define a custom udev rule that matches the device and creates a device with the name that you want. Arch Linux's udev wiki might help to get you started; I don't think there will be fundamental differences between that and CentOS.






          share|improve this answer




















          • Thanks, I read about the udev. Could you pls give me an example?
            – Soheil Pourbafrani
            Oct 1 at 13:55






          • 1




            Unfortunately I don't have a Linux machine in front of me. Did you see the wiki to which I referred you? The bit that talks about 83-webcam.rules is very similar to what you're after. You'll want to use udevadm to find out properties of your GPS (e.g., vendor, product id), and create a rule that generates the symlink.
            – Andy Dalton
            Oct 1 at 14:00














          up vote
          1
          down vote













          Given the name of your device --- /dev/gps0 --- I assume that you're dealing with some sort of GPS device. If so, your best bet would be to define a custom udev rule that matches the device and creates a device with the name that you want. Arch Linux's udev wiki might help to get you started; I don't think there will be fundamental differences between that and CentOS.






          share|improve this answer




















          • Thanks, I read about the udev. Could you pls give me an example?
            – Soheil Pourbafrani
            Oct 1 at 13:55






          • 1




            Unfortunately I don't have a Linux machine in front of me. Did you see the wiki to which I referred you? The bit that talks about 83-webcam.rules is very similar to what you're after. You'll want to use udevadm to find out properties of your GPS (e.g., vendor, product id), and create a rule that generates the symlink.
            – Andy Dalton
            Oct 1 at 14:00












          up vote
          1
          down vote










          up vote
          1
          down vote









          Given the name of your device --- /dev/gps0 --- I assume that you're dealing with some sort of GPS device. If so, your best bet would be to define a custom udev rule that matches the device and creates a device with the name that you want. Arch Linux's udev wiki might help to get you started; I don't think there will be fundamental differences between that and CentOS.






          share|improve this answer












          Given the name of your device --- /dev/gps0 --- I assume that you're dealing with some sort of GPS device. If so, your best bet would be to define a custom udev rule that matches the device and creates a device with the name that you want. Arch Linux's udev wiki might help to get you started; I don't think there will be fundamental differences between that and CentOS.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Oct 1 at 13:47









          Andy Dalton

          4,9791520




          4,9791520











          • Thanks, I read about the udev. Could you pls give me an example?
            – Soheil Pourbafrani
            Oct 1 at 13:55






          • 1




            Unfortunately I don't have a Linux machine in front of me. Did you see the wiki to which I referred you? The bit that talks about 83-webcam.rules is very similar to what you're after. You'll want to use udevadm to find out properties of your GPS (e.g., vendor, product id), and create a rule that generates the symlink.
            – Andy Dalton
            Oct 1 at 14:00
















          • Thanks, I read about the udev. Could you pls give me an example?
            – Soheil Pourbafrani
            Oct 1 at 13:55






          • 1




            Unfortunately I don't have a Linux machine in front of me. Did you see the wiki to which I referred you? The bit that talks about 83-webcam.rules is very similar to what you're after. You'll want to use udevadm to find out properties of your GPS (e.g., vendor, product id), and create a rule that generates the symlink.
            – Andy Dalton
            Oct 1 at 14:00















          Thanks, I read about the udev. Could you pls give me an example?
          – Soheil Pourbafrani
          Oct 1 at 13:55




          Thanks, I read about the udev. Could you pls give me an example?
          – Soheil Pourbafrani
          Oct 1 at 13:55




          1




          1




          Unfortunately I don't have a Linux machine in front of me. Did you see the wiki to which I referred you? The bit that talks about 83-webcam.rules is very similar to what you're after. You'll want to use udevadm to find out properties of your GPS (e.g., vendor, product id), and create a rule that generates the symlink.
          – Andy Dalton
          Oct 1 at 14:00




          Unfortunately I don't have a Linux machine in front of me. Did you see the wiki to which I referred you? The bit that talks about 83-webcam.rules is very similar to what you're after. You'll want to use udevadm to find out properties of your GPS (e.g., vendor, product id), and create a rule that generates the symlink.
          – Andy Dalton
          Oct 1 at 14:00












          up vote
          0
          down vote













          Add it /etc/rc.local. Make sure /etc/rc.local is executable.



          vim /etc/rc.local
          ln -s /dev/ttyUSB0 /dev/gps0

          ls -l /etc/rc.local
          lrwxrwxrwx. 1 root root 13 Sep 26 05:46 /etc/rc.local -> rc.d/rc.local





          share|improve this answer






















          • I did but after reboot, it didn't create the link. Maybe because the command needs sudo privileges
            – Soheil Pourbafrani
            Oct 1 at 13:57














          up vote
          0
          down vote













          Add it /etc/rc.local. Make sure /etc/rc.local is executable.



          vim /etc/rc.local
          ln -s /dev/ttyUSB0 /dev/gps0

          ls -l /etc/rc.local
          lrwxrwxrwx. 1 root root 13 Sep 26 05:46 /etc/rc.local -> rc.d/rc.local





          share|improve this answer






















          • I did but after reboot, it didn't create the link. Maybe because the command needs sudo privileges
            – Soheil Pourbafrani
            Oct 1 at 13:57












          up vote
          0
          down vote










          up vote
          0
          down vote









          Add it /etc/rc.local. Make sure /etc/rc.local is executable.



          vim /etc/rc.local
          ln -s /dev/ttyUSB0 /dev/gps0

          ls -l /etc/rc.local
          lrwxrwxrwx. 1 root root 13 Sep 26 05:46 /etc/rc.local -> rc.d/rc.local





          share|improve this answer














          Add it /etc/rc.local. Make sure /etc/rc.local is executable.



          vim /etc/rc.local
          ln -s /dev/ttyUSB0 /dev/gps0

          ls -l /etc/rc.local
          lrwxrwxrwx. 1 root root 13 Sep 26 05:46 /etc/rc.local -> rc.d/rc.local






          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Oct 1 at 13:51

























          answered Oct 1 at 13:43









          EBIN GLADSON

          3316




          3316











          • I did but after reboot, it didn't create the link. Maybe because the command needs sudo privileges
            – Soheil Pourbafrani
            Oct 1 at 13:57
















          • I did but after reboot, it didn't create the link. Maybe because the command needs sudo privileges
            – Soheil Pourbafrani
            Oct 1 at 13:57















          I did but after reboot, it didn't create the link. Maybe because the command needs sudo privileges
          – Soheil Pourbafrani
          Oct 1 at 13:57




          I did but after reboot, it didn't create the link. Maybe because the command needs sudo privileges
          – Soheil Pourbafrani
          Oct 1 at 13:57

















           

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