Is there something built-in for this ?

[Thibaut Barrère]

Hi,

very often I use this method:

def launch(cmd)
raise "Error launching #{cmd}" unless system(cmd)
end

Is there a built-in equivalent ?

cheers,

-- Thibaut

 

[Aldric Giacomoni]

Hi,

very often I use this method:

def launch(cmd)
raise "Error launching #{cmd}" unless system(cmd)
end

Is there a built-in equivalent ?

cheers,

-- Thibaut

begin
system(cmd)
rescue NameError => e
puts e
end

.... Does that help you ?

--Aldric

 

[Thibaut Barrère]

begin

  system(cmd)
rescue NameError => e
  puts e
end

... Does that help you ?

hum -- not sure actually. Is system() supposed to raise a NameError ?
I didn't see this mentioned in the docs.

I searched further yet could not find anything like launch() so far.

-- Thibaut

 

[Aldric Giacomoni]

hum -- not sure actually. Is system() supposed to raise a NameError ?
I didn't see this mentioned in the docs.

I searched further yet could not find anything like launch() so far.

-- Thibaut

I have no idea.. I just started a shell, made up a command name which I
knew didn't exist, and waited to see what came back.
Reading your original post again, I think it's not quite what you want...

 

[7stud --]

hum -- not sure actually. Is system() supposed to raise a NameError ?
I didn't see this mentioned in the docs.

Easy enough to test:

begin
result = system("made up command")
puts result
rescue NameError => e
puts e
end

--output:--
false