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shell script to pass values properties file in java


How is Ansible different from simply running a provisioning bash shell in Vagrant?Problems with integrating Python script in a Bash script Git pre-receive hookShell ScriptingCassandra DB: store binary file record via shellAccess vault secret from bash scriptDocker exec environment different to container shellAutomating the creation of an Apache virtual-host file specificallyBackground process not running after executing shell scriptecho colon to file in cloud-initI want to modify this bash script not to ask for password for each file













1















I have a properties file that looks like this:



mysql.username=USERNAME
mysql.pass=PASS


I need to change USERNAME and PASS with variable values passed to shell script. I cannot use sed since that will work fine the first time to replace USERNAME and PASS with "values" but once they are replaced, sed will not find the variable names in the file the second time the script runs and thus an issue.



How can this be handled?










share|improve this question







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Simran kaur is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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    1















    I have a properties file that looks like this:



    mysql.username=USERNAME
    mysql.pass=PASS


    I need to change USERNAME and PASS with variable values passed to shell script. I cannot use sed since that will work fine the first time to replace USERNAME and PASS with "values" but once they are replaced, sed will not find the variable names in the file the second time the script runs and thus an issue.



    How can this be handled?










    share|improve this question







    New contributor




    Simran kaur is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.






















      1












      1








      1








      I have a properties file that looks like this:



      mysql.username=USERNAME
      mysql.pass=PASS


      I need to change USERNAME and PASS with variable values passed to shell script. I cannot use sed since that will work fine the first time to replace USERNAME and PASS with "values" but once they are replaced, sed will not find the variable names in the file the second time the script runs and thus an issue.



      How can this be handled?










      share|improve this question







      New contributor




      Simran kaur is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      I have a properties file that looks like this:



      mysql.username=USERNAME
      mysql.pass=PASS


      I need to change USERNAME and PASS with variable values passed to shell script. I cannot use sed since that will work fine the first time to replace USERNAME and PASS with "values" but once they are replaced, sed will not find the variable names in the file the second time the script runs and thus an issue.



      How can this be handled?







      shell-script bash






      share|improve this question







      New contributor




      Simran kaur is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question







      New contributor




      Simran kaur is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      share|improve this question




      share|improve this question






      New contributor




      Simran kaur is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      asked 12 hours ago









      Simran kaurSimran kaur

      1063




      1063




      New contributor




      Simran kaur is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.





      New contributor





      Simran kaur is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






      Simran kaur is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.




















          3 Answers
          3






          active

          oldest

          votes


















          2














          You can use below.



          [user@xyz ~]$ hh='mysql.username=USERNAME';echo $hh | awk -F"=" 'OFS=FS $2="Mango"; print '
          mysql.username=Mango





          share|improve this answer








          New contributor




          again is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
          Check out our Code of Conduct.



























            1














            You can obtain old parameters from the properties file before using sed, e.g.



            # get old parameters
            $ export oldUsername=$(grep mysql.username $FILE | cut -d'=' -f2)
            $ export oldPass=$(grep mysql.pass $FILE | cut -d'=' -f2)

            # set new parameters
            $ export newUsername=NEW_USERNAME
            $ export newPass=NEW_PASS

            # change parameters
            $ sed -i "s/$oldUsername/$newUsername/g" $FILE
            $ sed -i "s/$oldPass/$newPass/g" $FILE





            share|improve this answer








            New contributor




            Pavel Stroitelev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
            Check out our Code of Conduct.



























              1














              You should regenerate this file from a template using your configuration management system of choice.



              You could also write a shell script that uses a heredoc to do the same thing. But since we're in DevOps-land you really should be using your configuration management system for these things.






              share|improve this answer






















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                3 Answers
                3






                active

                oldest

                votes








                3 Answers
                3






                active

                oldest

                votes









                active

                oldest

                votes






                active

                oldest

                votes









                2














                You can use below.



                [user@xyz ~]$ hh='mysql.username=USERNAME';echo $hh | awk -F"=" 'OFS=FS $2="Mango"; print '
                mysql.username=Mango





                share|improve this answer








                New contributor




                again is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                Check out our Code of Conduct.
























                  2














                  You can use below.



                  [user@xyz ~]$ hh='mysql.username=USERNAME';echo $hh | awk -F"=" 'OFS=FS $2="Mango"; print '
                  mysql.username=Mango





                  share|improve this answer








                  New contributor




                  again is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                  Check out our Code of Conduct.






















                    2












                    2








                    2







                    You can use below.



                    [user@xyz ~]$ hh='mysql.username=USERNAME';echo $hh | awk -F"=" 'OFS=FS $2="Mango"; print '
                    mysql.username=Mango





                    share|improve this answer








                    New contributor




                    again is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                    Check out our Code of Conduct.










                    You can use below.



                    [user@xyz ~]$ hh='mysql.username=USERNAME';echo $hh | awk -F"=" 'OFS=FS $2="Mango"; print '
                    mysql.username=Mango






                    share|improve this answer








                    New contributor




                    again is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                    Check out our Code of Conduct.









                    share|improve this answer



                    share|improve this answer






                    New contributor




                    again is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                    Check out our Code of Conduct.









                    answered 10 hours ago









                    againagain

                    1211




                    1211




                    New contributor




                    again is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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                    New contributor





                    again is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                    Check out our Code of Conduct.






                    again is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                    Check out our Code of Conduct.





















                        1














                        You can obtain old parameters from the properties file before using sed, e.g.



                        # get old parameters
                        $ export oldUsername=$(grep mysql.username $FILE | cut -d'=' -f2)
                        $ export oldPass=$(grep mysql.pass $FILE | cut -d'=' -f2)

                        # set new parameters
                        $ export newUsername=NEW_USERNAME
                        $ export newPass=NEW_PASS

                        # change parameters
                        $ sed -i "s/$oldUsername/$newUsername/g" $FILE
                        $ sed -i "s/$oldPass/$newPass/g" $FILE





                        share|improve this answer








                        New contributor




                        Pavel Stroitelev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                        Check out our Code of Conduct.
























                          1














                          You can obtain old parameters from the properties file before using sed, e.g.



                          # get old parameters
                          $ export oldUsername=$(grep mysql.username $FILE | cut -d'=' -f2)
                          $ export oldPass=$(grep mysql.pass $FILE | cut -d'=' -f2)

                          # set new parameters
                          $ export newUsername=NEW_USERNAME
                          $ export newPass=NEW_PASS

                          # change parameters
                          $ sed -i "s/$oldUsername/$newUsername/g" $FILE
                          $ sed -i "s/$oldPass/$newPass/g" $FILE





                          share|improve this answer








                          New contributor




                          Pavel Stroitelev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                          Check out our Code of Conduct.






















                            1












                            1








                            1







                            You can obtain old parameters from the properties file before using sed, e.g.



                            # get old parameters
                            $ export oldUsername=$(grep mysql.username $FILE | cut -d'=' -f2)
                            $ export oldPass=$(grep mysql.pass $FILE | cut -d'=' -f2)

                            # set new parameters
                            $ export newUsername=NEW_USERNAME
                            $ export newPass=NEW_PASS

                            # change parameters
                            $ sed -i "s/$oldUsername/$newUsername/g" $FILE
                            $ sed -i "s/$oldPass/$newPass/g" $FILE





                            share|improve this answer








                            New contributor




                            Pavel Stroitelev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.










                            You can obtain old parameters from the properties file before using sed, e.g.



                            # get old parameters
                            $ export oldUsername=$(grep mysql.username $FILE | cut -d'=' -f2)
                            $ export oldPass=$(grep mysql.pass $FILE | cut -d'=' -f2)

                            # set new parameters
                            $ export newUsername=NEW_USERNAME
                            $ export newPass=NEW_PASS

                            # change parameters
                            $ sed -i "s/$oldUsername/$newUsername/g" $FILE
                            $ sed -i "s/$oldPass/$newPass/g" $FILE






                            share|improve this answer








                            New contributor




                            Pavel Stroitelev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.









                            share|improve this answer



                            share|improve this answer






                            New contributor




                            Pavel Stroitelev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.









                            answered 11 hours ago









                            Pavel StroitelevPavel Stroitelev

                            112




                            112




                            New contributor




                            Pavel Stroitelev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.





                            New contributor





                            Pavel Stroitelev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.






                            Pavel Stroitelev is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
                            Check out our Code of Conduct.





















                                1














                                You should regenerate this file from a template using your configuration management system of choice.



                                You could also write a shell script that uses a heredoc to do the same thing. But since we're in DevOps-land you really should be using your configuration management system for these things.






                                share|improve this answer



























                                  1














                                  You should regenerate this file from a template using your configuration management system of choice.



                                  You could also write a shell script that uses a heredoc to do the same thing. But since we're in DevOps-land you really should be using your configuration management system for these things.






                                  share|improve this answer

























                                    1












                                    1








                                    1







                                    You should regenerate this file from a template using your configuration management system of choice.



                                    You could also write a shell script that uses a heredoc to do the same thing. But since we're in DevOps-land you really should be using your configuration management system for these things.






                                    share|improve this answer













                                    You should regenerate this file from a template using your configuration management system of choice.



                                    You could also write a shell script that uses a heredoc to do the same thing. But since we're in DevOps-land you really should be using your configuration management system for these things.







                                    share|improve this answer












                                    share|improve this answer



                                    share|improve this answer










                                    answered 8 hours ago









                                    chickschicks

                                    1,1291423




                                    1,1291423




















                                        Simran kaur is a new contributor. Be nice, and check out our Code of Conduct.









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                                        Simran kaur is a new contributor. Be nice, and check out our Code of Conduct.












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                                        Simran kaur is a new contributor. Be nice, and check out our Code of Conduct.














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