Using ClearCase

IBM Rational ClearCase is a version control, workspace management, parallel development support, and build automation solution developed by IBM. The ClearCase client plugin is available on Linux and Windows for accessing a ClearCase server.

Using GNU Diffutils with ClearCase

You can use the GNU Diffutils tool With ClearCase to compare files and activities:

1. 下载 Diffutils and extract it to a directory in your PATH.
2. 选择 工具 > Options > Version Control > ClearCase .
3. Select the External radio button. The radio button is disabled if diff is not found in the PATH.
4. 在 自变量 field, specify arguments for running diff .

Checking out and Checking in

In addition to the standard version control system functions described in Using Common Functions , you can check out and check in files.

To create a writable copy of a file, select 工具 > ClearCase > Check Out . If you check out files in a Unified Change Management (UCM) view, they are added to the change set of a UCM activity. By default, the activities are automatically assigned names. To disable this functionality, select 工具 > Options > Version Control > ClearCase , and then deselect the Automatically assign activity names check box.

To automatically check out files when you edit them, select 工具 > Options > Version Control > ClearCase , and then select the Automatically check out files on edit check box.

To cancel the checkout for a file and delete the checked-out version, select 工具 > ClearCase > Undo Check Out .

To check in checked-out versions of files in the change set of the current UCM activity, select 工具 > ClearCase > Check In Activity .

To create a permanent new version of the current file or all files in the versioned object base (VOB), select 工具 > ClearCase > Check In . To be asked to confirm that you want to check in the files, select 工具 > Options > Version Control > ClearCase , and then select the Prompt on check-in check box.

By default, you are asked to enter a comment when checking files out or in. To suppress this prompt, select 工具 > Options > Version Control > ClearCase , and then select the Do not prompt for comment during checkout or check-in check box.

If you change the read-only attribute of a file that is loaded into a snapshot view and modify the file without checking it out, you hijack the file. To revert a hijacked file to its checked in version, select 工具 > ClearCase > Undo Hijack .

By default, the files in the VOBs are indexed for quick access to their statuses. To disable indexing, select 工具 > Options > Version Control > ClearCase , and then select the Disable indexer check box. To only have some VOBs indexed, specify them in the Index only VOBs field.