sys

Use sys for process arguments, environment variables, working directories, process IDs, shell commands, and opening URLs.

import "std:sys"

Example

import "std:sys"

log sys.getArgs()
log sys.getCwd()

API reference

sys

Method	Returns	Notes
sys.getArgs()	array	Returns args.
sys.getEnv(key: string)	string	Returns env.
sys.setEnv(key: string, value: string)	boolean	Sets env.
sys.unsetEnv(key: string)	boolean	Removes an environment variable.
sys.getCwd()	string	Returns cwd.
sys.chdir(path: string)	boolean
sys.getPid()	number	Returns pid.
sys.getPpid()	number	Returns ppid.
sys.getUid()	number	Returns uid.
sys.getGid()	number	Returns gid.
sys.getUsername()	string	Returns the current user's name.
sys.getHomeDir()	string	Returns the current user's home directory.
sys.cmd(cmd: string, ...args: string)	string	Runs a command with arguments forwarded directly. Returns stdout up to 16 MiB, or an empty string on command failure or excess output.
sys.getExecutablePath()	string	Returns executable path.
sys.openURL(url: string)	boolean	Opens a validated URL using the exact platform command.

Notes

• Prefer import "std:sys"; the older import "osl/sys" spelling remains supported.

Behavior and limits

Environment and working-directory changes are safe across threads. User and group ID 0 is reported rather than treated as missing. openURL rejects malformed URLs and unsupported schemes.