os

Output the auto-detected OS name

Description

Output the auto-detected OS name.

Usage

os -> `<stdout>`

os string -> `<stdout>`
```

Examples

» os
linux

Or if you want to check if the host is one of a number of platforms:

# When run on Linux or FreeBSD
» os linux freebsd
true

# When run on another platform, eg Windows or Darwin (OSX)
# (exit number would also be `1`)
» os linux freebsd
false

posix is also supported:

# When run on Linux, FreeBSD or Darwin (for example)
» os posix
true

# When run on Windows or Plan 9
# (exit number would also be `1`)
» os posix
false

Please note that although Plan 9 shares similarities with POSIX, it is not POSIX-compliant. For that reason, os returns false with the posix parameter when run on Plan 9. If you want to include Plan 9 in the check then please write it as os posix plan9.

See Also

• cpuarch: Output the hosts CPU architecture
• cpucount: Output the number of CPU cores available on your host