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Hi , Could you tell me if I am right
1. Using fork(), pipe(), execlp() and dup() (see man 2 dup), write a C program executing the command ps -j in a parent process, displaying the result in a...

hello ,
I know that Unix shell command are in fact C functions behind.
I just need to do some unix funcitons in a C script like kill a process.
How can I do that?

I know how to get the pid .
...

Hi everybody , I got a file user.list
user.list
London John
Bridge Peter
Denoyelle Rémi

I got a script
awk '{
command="echo "$1
command | getline echome
close(command)
print $0 "\t"...

hi , I got a script that I don't understand.


awk '{
command="echo "$1
command | getline echome
close(command)
print $0 "\t" echome
}' < user.list
It reads the file user.list
user.list...

thanks so much

Hi,

I would like to display a sorted list (based on the login name) of the login name, the home directory and the default shell of each user defined on the system ;

I just do
cut -d: ...

I am a little confused.

I got labs to prepare and the question is

5. Normal links cannot be done on directories. What is the meaning of the "link field" for directories ?

I would answer ,...

so the link field is the number of hard links that is the number of directories that points on it?

Hi everybody .
I am a newbie in UNIX.

I understood the concept of unix system files .

For normal files , the link field is the number of hard links that points to this file.

But there is...