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Several problems while trying to make screen automatically start another
From: |
Kresimir Cosic |
Subject: |
Several problems while trying to make screen automatically start another program. |
Date: |
Wed, 26 Apr 2006 20:47:14 +0200 |
User-agent: |
Mozilla Thunderbird 1.0.6 (Windows/20050716) |
Problem 1.
For a test, I made a very simple C program named fooint.cpp:
#include <stdio.h>
main()
{
int i;
scanf("%d",&i);
printf("rez: %d\n",i);
return 0;
}
and compiled it with:
g++ -o fooint.exe fooint.cpp
If I try to start it with:
screen fooint.exe
it works fine.
But, if I try to link it with libmysqlclient (v4.16):
g++ -o fooint2.exe fooint.cpp -L/home/kreso/prog/mysql/lib/mysql
-lmysqlclient
screen fooint2.exe
then fooint2.exe doesn't even get executed and I get error message:
[the screen is terminating]
Also, this fooint2.exe works normally in every other way, for
example if I start screen, and then run fooint2.exe within it, it
works properly.
Problem 2.
I tried to get around problem 1. To do that, first I wanted that
when starting screen, it gets detached immediately. So I created a
file named tdscreenrc.txt, which contains a sinle line with the
command 'detach'.
Then I executed:
screen -S tdm -c /home/kreso/tdscreenrc.txt
screen -S tdm -X eval 'stuff "/home/kreso/prog/fooint.exe"\015'
and it works fine.
But then I wanted to make a program that would execute the above two
commands automatically:
#include <stdio.h>
#include <stdlib.h>
main()
{
system("screen -S tdm -c /home/kreso/tdscreenrc.txt");
system("screen -S tdm -X eval 'stuff
\"/home/kreso/prog/fooint.exe\"\\015'");
return 0;
}
When I run this program, it doesn't work properly. The first system
call works fine, the second one doesn't. I haven't got the slightest
clue what could possibly be wrong with second call.
Problem 3.
I tried to change the acive window while screen is detached. I
created screen named tdm with 2 windows, detached and tried:
screen -S tdm -X next
but that doesn't work (the active window doesn't change). I also tried:
screen -S tdm -X eval 'stuff "screen -X next"\015'
and it also doesn't work.
Any suggestions? I am not very skilled when working with linux, so
anything is appreciated.
- Several problems while trying to make screen automatically start another program.,
Kresimir Cosic <=