I already said that I was new to exec() function. After doing some more digging, I came upon 2>&1 which needs to be added at the end of command in exec(). Thanks @mattosmat for pointing it out in the comments too. I did not try this at once because you said it is a Linux command, I am on Windows. So, what … Read more
The exec built-in command mirrors functions in the kernel, there are a family of them based on execve, which is usually called from C. exec replaces the current program in the current process, without forking a new process. It is not something you would use in every script you write, but it comes in handy on occasion. Here are some … Read more
Summary: In your case I would recommend to use execvp. To find out the differences between the exec* functions you should read the documentation:https://linux.die.net/man/3/exechttps://linux.die.net/man/2/execve The difference between execl* and execv* is the argument passing. execl* require a list of arguments while execv* require a vector of arguments.A list of arguments is useful if you know … Read more
The code seems to miss to NULL-terminate arrays[k]. Make the last entry in arrays[k] carry NULL. Update: This should be of even more straight forward just: as the members of the exec*()-family of functions return on error only.
Tested on Ubuntu Server 10.04. I hope it helps you also on Arch Linux. In PHP use shell_exec function: Execute command via shell and return the complete output as a string. It returns the output from the executed command or NULL if an error occurred or the command produces no output. Into Python file test.py, verify this … Read more
The differences are combinations of: L vs V: whether you want to pass the parameters to the exec’ed program as L: individual parameters in the call (variable argument list): execl(), execle(), execlp(), and execlpe() V: as an array of char* execv(), execve(), execvp(), and execvpe() The array format is useful when the number of parameters … Read more
If the program name argument contains no slashes, the execvp() function looks for the program to execute in the directories listed on your PATH environment variable. If you don’t have . (the current directory) on your PATH and you aren’t in one of the directories listed on your path, a plain name like b will not be executed, even if b is in … Read more
I figured it out now. When you need to run two commands in exec in a find you need to actually have two separate execs. This finally worked for me.