Update alternatives

In other words, the usage of update-alternatives is mandatory for all involved packages in such case. It is not possible to override some file in a package that does not employ the update-alternatives mechanism. Let update-alternatives replace or drop any real file that is installed where an alternative link has to be installed or removed. Skip configuration prompt for alternatives which are properly configured in automatic mode.

This option is only relevant with --config or --all. Add a group of alternatives to the system. The arguments after --slave are the generic name, symlink name in the alternatives directory and the alternative path for a slave link. Zero or more --slave options, each followed by three arguments, may be specified. Note that the master alternative must exist or the call will fail. If some real file is installed where an alternative link has to be installed, it is kept unless --force is used.

Otherwise, a new group, set to automatic mode, will be added with this information. Set the program path as alternative for name. This is equivalent to --config but is non-interactive and thus scriptable. Remove an alternative and all of its associated slave links. If name is indeed linked to path , name will be updated to point to another appropriate alternative and the group is put back in automatic mode , or removed if there is no such alternative left.

Associated slave links will be updated or removed, correspondingly. If the link is not currently pointing to path , no links are changed; only the information about the alternative is removed.

Remove all alternatives and all of their associated slave links. Call --config on all alternatives. It can be usefully combined with --skip-auto to review and configure all alternatives which are not configured in automatic mode. Broken alternatives are also displayed. Thus a simple way to fix all broken alternatives is to call yes '' update-alternatives --force --all. Switch the link group behind the alternative for name to automatic mode. In the process, the master symlink and its slaves are updated to point to the highest priority installed alternatives.

Display information about the link group. List all master alternative names those controlling a link group and their status. Each line contains up to 3 fields separated by one or more spaces.

Read configuration of alternatives on standard input in the format generated by update-alternatives --get-selections and reconfigure them accordingly.

Show available alternatives for a link group and allow the user to interactively select which one to use. The link group is updated. However, despite reading the documentation I cannot get the command of a couple of variations to work. Here is the command I'm running:. Building gcc is no small feat. By comparison, using an explicit path to your custom gcc build seems like an insignificant triviality.

Or, put your custom built gcc's location in your PATH environment variable first, and move on to something else. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams?

Collectives on Stack Overflow. Learn more. How to use update-alternatives in centos? Ask Question. Asked 1 year, 1 month ago. Active 1 year, 1 month ago. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams?

Learn more. How to set alternatives in Ask Question. Asked 9 years ago. Active 3 years, 9 months ago. Viewed 21k times. On Linux you can use update-alternative to change the version of a command. Which command in OS X Improve this question. Pro Backup 3, 6 6 gold badges 34 34 silver badges 58 58 bronze badges. Dobbo Dobbo 1 1 gold badge 1 1 silver badge 5 5 bronze badges. There's no such thing on OS X.