Running a script in system() call and want the script's output

Shell Programming and Scripting
1

Hi All,

I have a script(sample.sh) displaying the output of "dd" command. Now i am using this script in system() call as,

system("sh sample.sh") in an application file.

I want the output of system("sh sample.sh") in the application file itself.

How can i get it?

Many thnaks.
amio

2

In what programming language is your application written?

3

Maybe redirect the system() execution output to a file?

Something like this:

system("sh sample.sh 1>sample.out 2>sample.err")

And then do what you need in the sample[out|err] files.

4

You can parse the full output to a file with the > after the sh file.sh, if you want this...

5

It should already be outputting to the same terminal as your application. Where else do you want it?

6

in the application file itself.....Ammm
sh sample.sh > sample.sh ???? This will overwrite the executable with the output, don't do it if you're not sure that this is the correct solution

7

I think he wants something like, in Perl and Shell:

variable=`/path/to/sample.sh`

But if we don't know what programming language the application is written, it is difficult.

8

Assuming you are programming in C, don't use system() but popen() to get the command output.

9

The application is written in C. As of now, am redirecting the output to a file and reading it from the file.

Thanks a lot for everyone's inputs..

10

In C you can use popen() as jlliagre mentioned.

Regards