How to set a global persistent variable?

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2
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I'm creating a bashscript to setup a small application I'm writing. Part of that setup requires setting an environment variable so that other processes may reference it.



My simple shell script test looks like this:



#!/bin/sh

export FOO=abc


I understand why FOO will not be visible after the script is executed, if done like so:



$ sh script.sh


and why this will make it visible:



$ source script.sh


so that's a workaround, but I'm wondering how common install scripts do this - for example, I'm pretty sure installers like mysql etc do set global environment variables.



What is the right way to do this? I guess I can ask my users to install by running:



$ source script.sh


but not sure if there is a better way.



Thanks






bash scripts environment-variables







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  • Possible solutions: askubuntu.com/questions/58814/…
    – Terrance
    Mar 21 at 17:34














up vote
2
down vote

favorite
2












I'm creating a bashscript to setup a small application I'm writing. Part of that setup requires setting an environment variable so that other processes may reference it.



My simple shell script test looks like this:



#!/bin/sh

export FOO=abc


I understand why FOO will not be visible after the script is executed, if done like so:



$ sh script.sh


and why this will make it visible:



$ source script.sh


so that's a workaround, but I'm wondering how common install scripts do this - for example, I'm pretty sure installers like mysql etc do set global environment variables.



What is the right way to do this? I guess I can ask my users to install by running:



$ source script.sh


but not sure if there is a better way.



Thanks






bash scripts environment-variables







share|improve this question





















  • Possible solutions: askubuntu.com/questions/58814/…
    – Terrance
    Mar 21 at 17:34












up vote
2
down vote

favorite
2









up vote
2
down vote

favorite
2






2





I'm creating a bashscript to setup a small application I'm writing. Part of that setup requires setting an environment variable so that other processes may reference it.



My simple shell script test looks like this:



#!/bin/sh

export FOO=abc


I understand why FOO will not be visible after the script is executed, if done like so:



$ sh script.sh


and why this will make it visible:



$ source script.sh


so that's a workaround, but I'm wondering how common install scripts do this - for example, I'm pretty sure installers like mysql etc do set global environment variables.



What is the right way to do this? I guess I can ask my users to install by running:



$ source script.sh


but not sure if there is a better way.



Thanks






bash scripts environment-variables







share|improve this question













I'm creating a bashscript to setup a small application I'm writing. Part of that setup requires setting an environment variable so that other processes may reference it.



My simple shell script test looks like this:



#!/bin/sh

export FOO=abc


I understand why FOO will not be visible after the script is executed, if done like so:



$ sh script.sh


and why this will make it visible:



$ source script.sh


so that's a workaround, but I'm wondering how common install scripts do this - for example, I'm pretty sure installers like mysql etc do set global environment variables.



What is the right way to do this? I guess I can ask my users to install by running:



$ source script.sh


but not sure if there is a better way.



Thanks






bash scripts environment-variables




bash scripts environment-variables






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Mar 21 at 17:30









user3203425

1345




1345











  • Possible solutions: askubuntu.com/questions/58814/…
    – Terrance
    Mar 21 at 17:34
















  • Possible solutions: askubuntu.com/questions/58814/…
    – Terrance
    Mar 21 at 17:34















Possible solutions: askubuntu.com/questions/58814/…
– Terrance
Mar 21 at 17:34




Possible solutions: askubuntu.com/questions/58814/…
– Terrance
Mar 21 at 17:34










1 Answer
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Add these lines to your script. Your script should have root access.



echo 'export FOO=abc' > /etc/profile.d/foo.sh


Next restart it will be available.






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    1 Answer
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    up vote
    1
    down vote



    accepted










    Add these lines to your script. Your script should have root access.



    echo 'export FOO=abc' > /etc/profile.d/foo.sh


    Next restart it will be available.






    share|improve this answer
























      up vote
      1
      down vote



      accepted










      Add these lines to your script. Your script should have root access.



      echo 'export FOO=abc' > /etc/profile.d/foo.sh


      Next restart it will be available.






      share|improve this answer






















        up vote
        1
        down vote



        accepted







        up vote
        1
        down vote



        accepted






        Add these lines to your script. Your script should have root access.



        echo 'export FOO=abc' > /etc/profile.d/foo.sh


        Next restart it will be available.






        share|improve this answer












        Add these lines to your script. Your script should have root access.



        echo 'export FOO=abc' > /etc/profile.d/foo.sh


        Next restart it will be available.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Mar 21 at 17:40









        dedunumax

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