# idea > JetBrains Java and Kotlin IDE. > More information: . - Open the current directory in IntelliJ IDEA: `idea {{path/to/directory}}` - Open a specific file or directory in IntelliJ IDEA: `idea {{path/to/file_or_directory}}` - Open the diff viewer to compare up to 3 files: `idea diff {{path/to/file1}} {{path/to/file2}}` - Open the merge dialog to perform a two-way file merge: `idea merge {{path/to/file1}} {{path/to/file2}} {{path/to/output}}` - Run code inspections on a project: `idea inspect {{path/to/project_directory}} {{path/to/inspection_profile}} {{path/to/output}}`