9 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
all,
i've been reading to try and get an abstract idea of the process effeciency of commands , sed, bash, perl, awk, find, grep, etc
which processes will spawn?, fork?, launch subshell?, etc and under what conditions?
how do you know which commands have the faster and better stdio... (2 Replies)
Discussion started by: f77hack
2 Replies
2. Shell Programming and Scripting
Hi,
I am facing issues with the below:
I have a lookup file say lookup.lkp.This lookup.lkp file contains strings delimited by comma(,).
Now i want to read this command from file and execute it.
So my code below is :
Contents in the lookup.lkp file is :
c_e,m,a,`cd $BOX | ls cef_*|tail... (7 Replies)
Discussion started by: vital_parsley
7 Replies
3. UNIX for Dummies Questions & Answers
Hello All,
i am a newbie and need some help when reading a csv file in a bourne shell script. I want to read 10 lines, then wait for a minute and then do a reading of another 10 lines and so on in the same way. I want to do this till the end of file.
Any inputs are appreciated
... (3 Replies)
Discussion started by: victor.s
3 Replies
4. Shell Programming and Scripting
I am using the while-loop to read a file.
The file has lines with null-terminated strings (words, actually.)
What I have by that reading - just a first word up to '\0'!
I need to have whole string up to 'new line' - (LF, 10#10, 16#A)
What I am doing wrong?
#make file 'grb' with... (6 Replies)
Discussion started by: alex_5161
6 Replies
5. Programming
# include <stdio.h>
# include <fcntl.h>
# include <stdlib.h>
# include <sys/stat.h>
int main(int argc, char *argv)
{
int fRead, fPadded, padVal;
int btRead;
int BUFFSIZE = 512;
char buff;
if (argc != 4)
{
printf ("Please provide all of the... (3 Replies)
Discussion started by: naranja18she
3 Replies
6. Programming
Hello *NIX gurus,
I have a slight perplexing problem with multiple forks giving different results... Here is the deal.
From what I undestand, a fork() call starts executing from the next instruction that follows the fork() call. That means it inherits the PC counter register value of the... (4 Replies)
Discussion started by: navigator
4 Replies
7. UNIX for Advanced & Expert Users
I am trying to figure out why when i have the following code
int main( { printf("0\n"); fork(); printf("1\n"); exit(0);}
and type in the shell
a.out | cat
the output of this program is
0
1
0
1
instead of
0
1
1
does anyone know? (3 Replies)
Discussion started by: Phantom12345
3 Replies
8. Programming
Hi, so I've got this program("main") that fork executes another ("user"). These programs communicate through fifos.
One communication is a spawn call, where user passes an executable, main forks and executes it. So, I'm keeping track of all my processes using a task table. After the fork (for... (6 Replies)
Discussion started by: Funktar
6 Replies
9. UNIX for Advanced & Expert Users
Hey guys,
I'm given this bit of code, but, I'm having some problems executing it with the functions I've defined so far. I'm suppose to define the funtions "parse" and "execute." Parse splits the command in buf into individual arguments. It strips whitespace, replacing those it finds with NULLS... (3 Replies)
Discussion started by: richardspence2
3 Replies