Assigne command ouput to a variable

ruby-talk
1

Hello guys!

I am a newbie in ruby and i have a question. I run a system command and i
want that the ouput of that command to be assigne to a variable, something
like this:

var1 = system("du -s /mnt/hdd/ | cut -f1") puts var1 or

var1 = exec("du -s /mnt/hdd/ | cut -f1") puts var1

but system return 0 or 1 if command is failed or succesful, and exec don't
assigne the output to variable var1.

Can you help me? Thanks in advance.

2

Alle mercoledì 7 novembre 2007, Dragoescu Daniel ha scritto:

Hello guys!

I am a newbie in ruby and i have a question. I run a system command and i
want that the ouput of that command to be assigne to a variable, something
like this:

var1 = system("du -s /mnt/hdd/ | cut -f1") puts var1 or

var1 = exec("du -s /mnt/hdd/ | cut -f1") puts var1

but system return 0 or 1 if command is failed or succesful, and exec don't
assigne the output to variable var1.

Can you help me? Thanks in advance.

You can use backticks instead of system:

3

Alle mercoledì 7 novembre 2007, Stefano Crocco ha scritto:

Alle mercoledì 7 novembre 2007, Dragoescu Daniel ha scritto:
> Hello guys!
>
> I am a newbie in ruby and i have a question. I run a system command and i
> want that the ouput of that command to be assigne to a variable,
> something like this:
>
> var1 = system("du -s /mnt/hdd/ | cut -f1") puts var1 or
>
> var1 = exec("du -s /mnt/hdd/ | cut -f1") puts var1
>
> but system return 0 or 1 if command is failed or succesful, and exec
> don't assigne the output to variable var1.
>
> Can you help me? Thanks in advance.

You can use backticks instead of system:

Sorry, I hit the send button by mistake.

You can use backticks instead of system:

var1 = `"du -s /mnt/hdd/ | cut -f1"`
puts var1

I hope this helps

Stefano

4

Hello!

It seems to work with:

···

----
var1 = `du -s /mnt/hdd/ | cut -f1`
puts var1
----
Thank you for the answare!

-----Original Message-----
From: Stefano Crocco [mailto:stefano.crocco@alice.it]
Sent: Wednesday, November 07, 2007 11:17 AM
To: ruby-talk ML
Subject: Re: Assigne command ouput to a variable

Alle mercoledì 7 novembre 2007, Stefano Crocco ha scritto:

Alle mercoledì 7 novembre 2007, Dragoescu Daniel ha scritto:
> Hello guys!
>
> I am a newbie in ruby and i have a question. I run a system command
> and i want that the ouput of that command to be assigne to a
> variable, something like this:
>
> var1 = system("du -s /mnt/hdd/ | cut -f1") puts var1 or
>
> var1 = exec("du -s /mnt/hdd/ | cut -f1") puts var1
>
> but system return 0 or 1 if command is failed or succesful, and exec
> don't assigne the output to variable var1.
>
> Can you help me? Thanks in advance.

You can use backticks instead of system:

Sorry, I hit the send button by mistake.

You can use backticks instead of system:

var1 = `"du -s /mnt/hdd/ | cut -f1"`
puts var1

I hope this helps

Stefano

5

Hi

You can get both the output from the command and its return value:

var1 = `du -s /mnt/hdd/ | cut -f1`
puts $?.exitstatus
puts var1

  Kristian

···

On Wed, 7 Nov 2007 18:35:55 +0900, "Dragoescu Daniel" <daniel.dragoescu@axigen.com> wrote:

Hello!

It seems to work with:
----
var1 = `du -s /mnt/hdd/ | cut -f1`
puts var1
----
Thank you for the answare!

-----Original Message-----
From: Stefano Crocco [mailto:stefano.crocco@alice.it]
Sent: Wednesday, November 07, 2007 11:17 AM
To: ruby-talk ML
Subject: Re: Assigne command ouput to a variable

Alle mercoledì 7 novembre 2007, Stefano Crocco ha scritto:

Alle mercoledì 7 novembre 2007, Dragoescu Daniel ha scritto:
> Hello guys!
>
> I am a newbie in ruby and i have a question. I run a system command
> and i want that the ouput of that command to be assigne to a
> variable, something like this:
>
> var1 = system("du -s /mnt/hdd/ | cut -f1") puts var1 or
>
> var1 = exec("du -s /mnt/hdd/ | cut -f1") puts var1
>
> but system return 0 or 1 if command is failed or succesful, and exec
> don't assigne the output to variable var1.
>
> Can you help me? Thanks in advance.

You can use backticks instead of system:

Sorry, I hit the send button by mistake.

You can use backticks instead of system:

var1 = `"du -s /mnt/hdd/ | cut -f1"`
puts var1

I hope this helps

Stefano