Create or Update if exists tar file

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I ran into that problem today when I wanted to tar all files and directories in a specified directory. Doing the following is not enough because hidden files (ones starting with . won't be included):



tar -czvf ~/tarfile.tar.gz /path/to/dir/*


Then I thought of the following:



find /path/to/dir/* -execdir /bin/tar -czvf ~/tarfile.tar.gz '' +


But this is not sufficient. What if execdir has reached the command lien limits and needed to re-run the same command with the rest set of files found?



So I needed an option or some way to create the tar file if it doesn't exists. If exists, append to it. Tried to find a solution to this, but couldn't. Thought of -r option but didn't work because it requires the existence of an already created tar file.



Does this mean there is no way and one has to write a mini-script to get this logic done?










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    0















    I ran into that problem today when I wanted to tar all files and directories in a specified directory. Doing the following is not enough because hidden files (ones starting with . won't be included):



    tar -czvf ~/tarfile.tar.gz /path/to/dir/*


    Then I thought of the following:



    find /path/to/dir/* -execdir /bin/tar -czvf ~/tarfile.tar.gz '' +


    But this is not sufficient. What if execdir has reached the command lien limits and needed to re-run the same command with the rest set of files found?



    So I needed an option or some way to create the tar file if it doesn't exists. If exists, append to it. Tried to find a solution to this, but couldn't. Thought of -r option but didn't work because it requires the existence of an already created tar file.



    Does this mean there is no way and one has to write a mini-script to get this logic done?










    share|improve this question
























      0












      0








      0








      I ran into that problem today when I wanted to tar all files and directories in a specified directory. Doing the following is not enough because hidden files (ones starting with . won't be included):



      tar -czvf ~/tarfile.tar.gz /path/to/dir/*


      Then I thought of the following:



      find /path/to/dir/* -execdir /bin/tar -czvf ~/tarfile.tar.gz '' +


      But this is not sufficient. What if execdir has reached the command lien limits and needed to re-run the same command with the rest set of files found?



      So I needed an option or some way to create the tar file if it doesn't exists. If exists, append to it. Tried to find a solution to this, but couldn't. Thought of -r option but didn't work because it requires the existence of an already created tar file.



      Does this mean there is no way and one has to write a mini-script to get this logic done?










      share|improve this question














      I ran into that problem today when I wanted to tar all files and directories in a specified directory. Doing the following is not enough because hidden files (ones starting with . won't be included):



      tar -czvf ~/tarfile.tar.gz /path/to/dir/*


      Then I thought of the following:



      find /path/to/dir/* -execdir /bin/tar -czvf ~/tarfile.tar.gz '' +


      But this is not sufficient. What if execdir has reached the command lien limits and needed to re-run the same command with the rest set of files found?



      So I needed an option or some way to create the tar file if it doesn't exists. If exists, append to it. Tried to find a solution to this, but couldn't. Thought of -r option but didn't work because it requires the existence of an already created tar file.



      Does this mean there is no way and one has to write a mini-script to get this logic done?







      find tar






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      share|improve this question











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      asked Jan 28 at 20:01









      jokerjoker

      22617




      22617




















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          Just use tar czvf ~/tarfile.tar.gz /path/to/dir/ without "*" which prevents the files starting with a "." from being included.



          If you want to update an existing tarfile.tar.gz (i.e. add more files to it), you will need a small hack to update it, because tar runs into trouble updating a "gzipped" file.
          This oneliner "unzips, updates and zips" the file or creates a new one.



          [ -f tarfile.tar.gz ] && (gunzip tarfile.tar.gz; tar uf tarfile.tar /path/to/dir/; gzip tarfile.tar) || tar cvfz tarfile.tar.gz /path/to/dir/


          The simplest option would be to use tar uf tarfile.tar /path/to/dir/ which creates the file or updates it. You will need to compress it manually afterwards (maybe copy it to a different location first).






          share|improve this answer
























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            1 Answer
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            Just use tar czvf ~/tarfile.tar.gz /path/to/dir/ without "*" which prevents the files starting with a "." from being included.



            If you want to update an existing tarfile.tar.gz (i.e. add more files to it), you will need a small hack to update it, because tar runs into trouble updating a "gzipped" file.
            This oneliner "unzips, updates and zips" the file or creates a new one.



            [ -f tarfile.tar.gz ] && (gunzip tarfile.tar.gz; tar uf tarfile.tar /path/to/dir/; gzip tarfile.tar) || tar cvfz tarfile.tar.gz /path/to/dir/


            The simplest option would be to use tar uf tarfile.tar /path/to/dir/ which creates the file or updates it. You will need to compress it manually afterwards (maybe copy it to a different location first).






            share|improve this answer





























              2














              Just use tar czvf ~/tarfile.tar.gz /path/to/dir/ without "*" which prevents the files starting with a "." from being included.



              If you want to update an existing tarfile.tar.gz (i.e. add more files to it), you will need a small hack to update it, because tar runs into trouble updating a "gzipped" file.
              This oneliner "unzips, updates and zips" the file or creates a new one.



              [ -f tarfile.tar.gz ] && (gunzip tarfile.tar.gz; tar uf tarfile.tar /path/to/dir/; gzip tarfile.tar) || tar cvfz tarfile.tar.gz /path/to/dir/


              The simplest option would be to use tar uf tarfile.tar /path/to/dir/ which creates the file or updates it. You will need to compress it manually afterwards (maybe copy it to a different location first).






              share|improve this answer



























                2












                2








                2







                Just use tar czvf ~/tarfile.tar.gz /path/to/dir/ without "*" which prevents the files starting with a "." from being included.



                If you want to update an existing tarfile.tar.gz (i.e. add more files to it), you will need a small hack to update it, because tar runs into trouble updating a "gzipped" file.
                This oneliner "unzips, updates and zips" the file or creates a new one.



                [ -f tarfile.tar.gz ] && (gunzip tarfile.tar.gz; tar uf tarfile.tar /path/to/dir/; gzip tarfile.tar) || tar cvfz tarfile.tar.gz /path/to/dir/


                The simplest option would be to use tar uf tarfile.tar /path/to/dir/ which creates the file or updates it. You will need to compress it manually afterwards (maybe copy it to a different location first).






                share|improve this answer















                Just use tar czvf ~/tarfile.tar.gz /path/to/dir/ without "*" which prevents the files starting with a "." from being included.



                If you want to update an existing tarfile.tar.gz (i.e. add more files to it), you will need a small hack to update it, because tar runs into trouble updating a "gzipped" file.
                This oneliner "unzips, updates and zips" the file or creates a new one.



                [ -f tarfile.tar.gz ] && (gunzip tarfile.tar.gz; tar uf tarfile.tar /path/to/dir/; gzip tarfile.tar) || tar cvfz tarfile.tar.gz /path/to/dir/


                The simplest option would be to use tar uf tarfile.tar /path/to/dir/ which creates the file or updates it. You will need to compress it manually afterwards (maybe copy it to a different location first).







                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited Jan 28 at 20:48

























                answered Jan 28 at 20:35









                FreddyFreddy

                3298




                3298



























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