Start another program from Swift script

Using Swift
1

Well, for example in Python we can run another program from interpreter by

import subprocess
result = subprocess.run('ruby script.rb').stdout

My question is next:
Can we do something from Swift file at runtime or maybe from terminal via REPL

And can you send me resource when I can read about work with stdin, stdout in Swift, because is very small info in Documentation (Standard Library I/O)

···

-
Alexandr

2

These kinds of things live in Foundation, not the standard library:

import Foundation

let p = Process()
p.executableURL = URL(fileURLWithPath: "/bin/ps")
try p.run()

The Process class provides you with stdin/out/error handles for the process (https://developer.apple.com/documentation/foundation/process\).
FileHandle also provides these standard streams for the current process (https://developer.apple.com/documentation/foundation/filehandle\).

- Karl

···

On 4. Jan 2018, at 17:03, Седых Александр via swift-users <swift-users@swift.org> wrote:

Well, for example in Python we can run another program from interpreter by

import subprocess
result = subprocess.run('ruby script.rb').stdout

My question is next:
Can we do something from Swift file at runtime or maybe from terminal via REPL

And can you send me resource when I can read about work with stdin, stdout in Swift, because is very small info in Documentation (Standard Library I/O)

-
Alexandr
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swift-users mailing list
swift-users@swift.org
https://lists.swift.org/mailman/listinfo/swift-users

3

The “Shell Out” package’s source code shows some simple usage of Foundation’s Process: https://github.com/JohnSundell/ShellOut/blob/master/Sources/ShellOut.swift#L33\.

That package also handles stdout / stdin, but for more sophisticated uses of FileManager the “Files” package’s source has some nice simple usage: https://github.com/JohnSundell/Files/blob/master/Sources/Files.swift

···

On Jan 4, 2018, at 10:31 AM, Karl Wagner via swift-users <swift-users@swift.org> wrote:

These kinds of things live in Foundation, not the standard library:

import Foundation

let p = Process()
p.executableURL = URL(fileURLWithPath: "/bin/ps")
try p.run()

The Process class provides you with stdin/out/error handles for the process (https://developer.apple.com/documentation/foundation/process\).
FileHandle also provides these standard streams for the current process (https://developer.apple.com/documentation/foundation/filehandle\).

- Karl

On 4. Jan 2018, at 17:03, Седых Александр via swift-users <swift-users@swift.org <mailto:swift-users@swift.org>> wrote:

Well, for example in Python we can run another program from interpreter by

import subprocess
result = subprocess.run('ruby script.rb').stdout

My question is next:
Can we do something from Swift file at runtime or maybe from terminal via REPL

And can you send me resource when I can read about work with stdin, stdout in Swift, because is very small info in Documentation (Standard Library I/O)

-
Alexandr
_______________________________________________
swift-users mailing list
swift-users@swift.org <mailto:swift-users@swift.org>
https://lists.swift.org/mailman/listinfo/swift-users

_______________________________________________
swift-users mailing list
swift-users@swift.org
https://lists.swift.org/mailman/listinfo/swift-users

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