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H, I have been trying to install sqldeveloper in my newly installed ubuntu16.0.4 os.

The problem here is,I am not able edit my sqldeveloper.sh file. I tried with sudo, chmod and chown but it shows operation not permitted. Help me here.

harishaa@harishaa-system:/opt/sqldeveloper$ chown harishaa sqldeveloper.sh
chown: changing ownership of 'sqldeveloper.sh': Operation not permitted

This is the file I want to change:

harish@harish-system:/opt/sqldeveloper$ chown harish sqldeveloper.sh
chown: changing ownership of 'sqldeveloper.sh': Operation not permitted

Thank you.

You'reAGitForNotUsingGit
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hgr
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1 Answers1

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Don't worry, there is a quick and safe solution.

How to execute an administrative action

Very quick introduction to sudo

Single command line

In a terminal execute:

sudo SUDOARGUMENTS COMMAND COMMANDARGUMENTS

...after replacing:

  • SUDOARGUMENTS with the parameters for the sudo utility (obtain a list from sudo --help;
  • COMMAND with the command to execute as the administrative user (root);
  • COMMANDARGUMENTS with the arguments for the command to execute as the administrative user (root).

Administrative session

Use only if necessary; always use the previous method if possible.

Execute sudo su to gain the root privileges and be very careful while executing any command.

Terminate the session using exit and never leave a root interactive session active without control.

Example

If sudo is configured correctly you can execute your command with:

sudo chown harishaa sqldeveloper.sh

...it will ask the password of your current user and safely remember it for some minutes. The command will be executed with higher privileges, execute only commands from trusted sources.

Useful references

If you are the administrator of a multi-user system (for example a PC user by father, mother and two small kids) read the official Ubuntu reference for the configuration of sudo.

Feel free to comment under here if you need more support.

Lorenzo Ancora
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