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I am installing oracle database in Ubuntu 16.04. I unzipped the file in /opt, then I tried to create a symbolic link using

sudo ln -s /opt/sqldeveloper/sqldeveloper.sh/usr/local/bin/sqldeveloper

but it shows error

ln: failed to create symbolic link './sqldeveloper': File exists

What should I do?

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    Typo? I think you intended to run sudo ln -s /opt/sqldeveloper/sqldeveloper.sh /usr/local/bin/sqldeveloper?. – Thomas Oct 31 '17 at 9:03
  • yes,I ran the command given in the question above. – Prashant Mani Oct 31 '17 at 9:06
  • although the code given by Thomas did worked but I really want to how is it different from that of my code given in question,coz I really can't find any difference – Prashant Mani Oct 31 '17 at 9:13
  • The difference is a space. – user692175 Nov 4 '17 at 3:41
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There is space missing in your command. Use this command (also mention by Thomas in comment).

sudo ln -s /opt/sqldeveloper/sqldeveloper.sh /usr/local/bin/sqldeveloper

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