Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Working of exec family of functions
Top Forums UNIX for Dummies Questions & Answers Working of exec family of functions Post 302806435 by techmonk on Monday 13th of May 2013 05:01:32 AM
Old 05-13-2013
Perhaps this kind of model serves your purpose.
Every time fork a child process, where it loads the executable with index as argument.
Parent process continues looping on index value.
Code:
for(index = 0; index < SOME_MAX_VAL;index++)
{
  pid = fork();
  if( pid > 0 )
    continue;
  else
    exec(SOME_EXECUTABLE,index);
}

NOTE: Please use the code tags, when you are exemplifying with code snippets.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

functions not working

I have the following functions but when I run SelectQmgr from a Menu Selection it doesn't do anything. SelectQmgr () { qmgrlist=`ls /var/mqm/qmgrs/ | grep -v @SYSTEM` qmgrcount=`ls /var/mqm/qmgrs/ | grep -v @SYSTEM | wc -l` if then echo "$qmgrlist QManager will be used " ... (7 Replies)
Discussion started by: darthur
7 Replies

2. OS X (Apple)

Address family not supported by protocol family

Hi, I compiled with no error a C program, than I tryed to execute it and than I get this error: connessione al server fallita: Address family not supported by protocol family What does it mean? Why I get this error only on Mac os x while on Ubuntu the program works? The code is:... (3 Replies)
Discussion started by: DNAx86
3 Replies

3. Programming

help me understand exec() family of calls...

how does exec() do it? on successful call of exec() family of functions, they never return... how to i emulate that. assume the standard example, execl("/bin/ls","ls",NULL); now this would never return. i m trying to emulate exec()'s never to return feature... #include<unistd.h>... (4 Replies)
Discussion started by: c_d
4 Replies

4. Shell Programming and Scripting

stdout redirect is working buy direct script exec but not in cron

Hi @ all :) i made a very little shell script witch is working well when i'm launching it directly like with ./script but when i'm launching it by cron tab it work at half only. the part of the script witch are not working are: #!/bin/sh apt-get updade apt-get -s upgrade >>... (5 Replies)
Discussion started by: calibal
5 Replies

5. Shell Programming and Scripting

basename not working as expected from find -exec

I have the following files in a directory > ls -1 /tmp/test/dir/ file with spaces 1.ogg file with spaces 2.oggI am running the following to echo the filenames but alter the file extension on the files to .mp3 instead of .ogg ( I am going to run ffmpeg against the files ultimately, but keeping... (2 Replies)
Discussion started by: jelloir
2 Replies

6. Shell Programming and Scripting

Script Variables Inquiry, Values Okay in Standalone Exec, No-Show in Cron Exec

I have the following bash script lines in a file named test.sh. #!/bin/bash # # Write Date to cron.log # echo "Begin SSI Load $(date +%d%b%y_%T)" # # Get the latest rates file for processing. # d=$(ls -tr /rms/data/ssi | grep -v "processed" | tail -n 1) filename=$d export filename... (3 Replies)
Discussion started by: ginowms
3 Replies

7. Shell Programming and Scripting

How to execute functions or initiate functions as command line parameters for below requirement?

I have 7 functions those need to be executed as command line inputs, I tried with below code it’s not executing function. If I run the ./script 2 then fun2 should execute , how to initiate that function I tried case and if else also, how to initiate function from command line if then... (8 Replies)
Discussion started by: saku
8 Replies

8. Programming

Working of exec family of functions

Hi, I am studying exec family of functions.Its man page says,it replaces the current process image with a new process image. If it replaces the binary,then after returning back,how does it get the previous parameters of the process which called exec?As replacing process image means replacing all... (1 Reply)
Discussion started by: Radha.Krishna
1 Replies

9. Shell Programming and Scripting

Menu with working functions

I am creating a menu currently that makes use of functions to complete each selected option but running into a bit of trouble calling them into action still fairly new with using functions correctly so any insight is appreciated. here is my code so far #!/bin/bash #Last updated on 05/14/14 ... (4 Replies)
Discussion started by: Backtickcruise
4 Replies

10. Programming

Simple shell running with exec family

# Erroneous question, so can be removed. (0 Replies)
Discussion started by: beginnerboy
0 Replies

LEARN ABOUT PHP

ingres_field_name

INGRES_FIELD_NAME(3)							 1						      INGRES_FIELD_NAME(3)

ingres_field_name - Get the name of a field in a query result

SYNOPSIS

       string ingres_field_name (resource  $result, int  $index)

DESCRIPTION

       ingres_field_name(3) returns the name of a field in a query result.

       Note

	      Related Configurations

	       See ingres.array_index_start in Runtime Configuration

PARAMETERS

	      o $result
		- The query result identifier

	      o $index
		-$index   is   the   field   whose   name   will  be  retrieved.   The	possible  values  of  $index  depend  upon  the  value	of
		ingres.array_index_start. If ingres.array_index_start is 1 (the default) then $index must be between 1 and the value  returned	by
		ingres_num_fields(3). If ingres.array_index_start is 0 then $index must be between 0 and ingres_num_fields(3)
		 - 1.

RETURN VALUES

	Returns the name of a field in a query result or FALSE on failure

SEE ALSO

       ingres_query(3), ingres_fetch_array(3), ingres_fetch_assoc(3), ingres_fetch_object(3), ingres_fetch_row(3).

PHP Documentation Group 												      INGRES_FIELD_NAME(3)
All times are GMT -4. The time now is 11:40 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy