how to read output of shell command to variable?

[sin kanti]

Hi,

In perl, we can do

$output = `file filename.txt`;

How can i do this in Ruby?
I know that there is system to run shell command like this;

system("file","filename.txt")

but how to return the output of "file" command to variable?


Sinchai

 

[David A. Black]

Hi --

Hi,

In perl, we can do

$output = `file filename.txt`;

How can i do this in Ruby?
I know that there is system to run shell command like this;

system("file","filename.txt")

but how to return the output of "file" command to variable?

output = `file filename.txt`


David

 

[Andrew Walrond]

Hi,

In perl, we can do

$output = `file filename.txt`;

How can i do this in Ruby?

$output = `file filename.txt`

 

[Robert Klemme]

$output = `file filename.txt`

In fact, you can even add the ";" and keep the Perl code altogether. )

$output = `file filename.txt`;

Kind regards

robert

 

[Josef 'Jupp' Schugt]

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Robert Klemme wrote:
|
| |
|> On Friday 01 April 2005 23:52, sin kanti wrote:
|>> In perl, we can do
|>>
|>> $output = `file filename.txt`;
|>>
|>> How can i do this in Ruby?
|>
|> $output = `file filename.txt`
|>
|>
|
| In fact, you can even add the ";" and keep the Perl code altogether.
| )
|
| $output = `file filename.txt`;

I'd prefer Perl's qx:

$output = qx{file filename.txt}

In Ruby that is

output = x{file filename.txt}

Note the absence of the dollar sign at the beginning of the variable
name. The dollar has different meanings in Ruby and Perl.

Josef 'Jupp' Schugt
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[James Edward Gray II]

I'd prefer Perl's qx:

$output = qx{file filename.txt}

In Ruby that is

output = x{file filename.txt}

I'm pretty sure you meant:

output = %x{file filename.txt}



James Edward Gray II