std.os Package
Function Description
The OS package provides capabilities such as obtaining or operating on information about the current process (such as process parameters, environment variables, and directory information), registering callback functions, and exiting the current process.
Currently, the OS package is supported on the Linux, macOS, Windows, and HarmonyOS platforms.
API List
Function
| Name | Description | Supported on |
|---|---|---|
| currentDir() | Obtains the current working directory. | Linux, Windows, macOS, and HarmonyOS |
| envVars() | Obtains all environment variables. | Linux, Windows, macOS, and HarmonyOS |
| getArgs() | Obtains the command line parameter list, for example, running a.out ab cd ef in the command line, where a.out is the program name. The returned list contains three elements: ab, cd, and ef. | Linux, Windows, macOS, and HarmonyOS |
| getEnv(String) | Obtains the value of a specified environment variable. | Linux, Windows, macOS, and HarmonyOS |
| homeDir() | Obtains the home directory. | Linux, Windows, and macOS |
| processorCount() | Obtains the number of processors. | Linux, Windows, macOS, and HarmonyOS |
| removeEnv(String) | Removes an environment variable by specifying its name. | Linux, Windows, macOS, and HarmonyOS |
| setEnv(String, String) | Sets a pair of environment variables. | Linux, Windows, macOS, and HarmonyOS |
| tempDir() | Obtains the temporary directory. | Linux, Windows, macOS, and HarmonyOS |