Variable substitution
When authoring tasks configurations, it is often useful to have a set of predefined common variables. VS Code supports variable substitution inside strings in the tasks.json file and has the following predefined variables:
- ${workspaceFolder} the path of the workspace folder that contains the tasks.json file
- ${workspaceFolderBasename} the name of the workspace folder that contains the tasks.json file without any slashes (/)
- ${file} the current opened file
- ${relativeFile} the current opened file relative to the workspace * folder containing the file
- ${fileBasename} the current opened file's basename
- ${fileBasenameNoExtension} the current opened file's basename without the extension
- ${fileDirname} the current opened file's dirname
- ${fileExtname} the current opened file's extension
- ${cwd} the task runner's current working directory on startup
- ${lineNumber} the current selected line number in the active file
