execl, execv or execp

Thread Tools Search this Thread
Top Forums Programming execl, execv or execp
# 1  
Old 04-21-2002
execl, execv or execp


I'm writing a C program which gets from the command line a shell command (such as "ls" ) and I should execute it.
My Q is: how can I send a command to the shell?

I know I have to use one of the above functions, but I don't know how to use them.

# 2  
Old 04-22-2002
Try typing "man execl". You will get a manual page describing the exact syntax of each of those system calls.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Execl() command

Hi, If I write in a c file : execlp("date","date",NULL); printf("A\n"); And then run through the terminal would "A" be printed ? I understood that execlp will exit the program after it finished so the next lines of code won`t be executed afterwards.. Is that true ? (1 Reply)
Discussion started by: uniran
1 Replies

2. Programming

Linux fork, execv, wait question

Hi All, I have a program for class that needs to do the following: 1. Print the directory entries from the current directory using ncurses 2. Provide a prompt next to each directory entry and allow the user to enter commands that may or may not be about the file 3. Execute those commands in... (1 Reply)
Discussion started by: afulldevnull
1 Replies

3. Programming

[C] execl and pipes?

Hi, I have two programs, one is named "Master" and the other one "slave". What I want to do is , when I execute Master, inside slave will be called by excecl, do some calculations, and send those to the master program... A little example of what I am failing to do: if ((PID1=fork())==0) { //... (6 Replies)
Discussion started by: lamachejo
6 Replies

4. Programming

When execl fails in C

when execl fails using the command lss, it doesnt go into the next line execl("/bin/sh", "/bin/sh", "-c", command, NULL); perror("execl failed"); exit(127); for some reason the child process just stops and also the parent process also stops so the line after the line that... (3 Replies)
Discussion started by: omega666
3 Replies

5. Red Hat

execl command

how to use find command in execl function, I used: execl("/usr/bin/find","find","~","-name","filename.c",0); but it shows find: ~ no file and directory i need to get the path of the file from the home .:wall: (2 Replies)
Discussion started by: Mahendravarma
2 Replies

6. Programming

time execl

hello everybody how can i time the execution of execl() command inside my C code? for example, i wrote.. execl("md5sum","md5sum","myprog",NULL); i want to count the duration of the execl command! thanx in advance! (2 Replies)
Discussion started by: nicos
2 Replies

7. Shell Programming and Scripting

need help with execl command

I want to make simultanous sh commands in an exec command for example I want to counts the lines in a file wc -l my file.txt | awk -F" " '{print $1}'` works fine in sh but I want to implement it in a c code the first part works like this execl("/usr/bin/wc", "wc", "-l", "myfile.txt",... (1 Reply)
Discussion started by: walnut
1 Replies

8. Programming


can anyone explain how to pass arguments of a program in execl function pls explain with a sample code. (2 Replies)
Discussion started by: bankpro
2 Replies

9. Programming

execl / execv ?

Hi, Is it possible to run a program from my C program using only the full pathname? for example if I wanna call: "ls", so I whould have to use: execl("/bin/ls", "ls", NULL); Is it possible to do this using only: "/bin/ls" thanks (1 Reply)
Discussion started by: owijust
1 Replies

10. UNIX for Dummies Questions & Answers

execv () vs execvp ()

what's the difference between the two? (3 Replies)
Discussion started by: hurleyint1386
3 Replies
Login or Register to Ask a Question