Aug 14, 2016 · i have vlc (program to reproduce videos) if i type in a shell: /home/vlc "/home/my movies/the movie i want to see.mkv" it opens up an reproduces the movie. however, when I run the following prog...

Apr 18, 2019 · execl* require a list of arguments while execv* require a vector of arguments. A list of arguments is useful if you know all the arguments at compile time. In your case the arguments will be entered by the user and you have to construct a vector of arguments at run time, so you should use one of the execv* functions.

Jul 29, 2020 · @AnttiHaapala, but it is nothing like POSIX execl in practice because it doesn't replace the process image, but instead creates a new process and terminates the current process. So if you're running this from the command line, the shell only waits for the process that it creates and resumes its interactive prompt after the _execl call, and now ...

Sep 16, 2019 · The 'path' argument to execl() is the pathname of the executable, not the directory containing the executable. . Making a guess, you probably n

execl is documented to require a char*. It could hardly try for another type until it had extracted the argument. It could hardly try for another type until it had extracted the argument. NULL has an integral type, usually int .

Jun 5, 2013 · execl() is just provided as a convenience, in case you have a fixed number of arguments, to allow you to avoid the trouble of setting up an array. execl() will store the function arguments in a temporary array itself and then make the system call. If you set up the argument array yourself then you have no need for execl(). –

execl("/bin/fortune", "fortune", (char*) NULL); This doesn't work. The main issue with the fortune command is that I'm either missing an argument, or I have the wrong location. I'm assuming it's the location because I can execute it with just "fortune" in the command line.

May 21, 2015 · execl is one of the several functions (exec*) that let you replace the current code of your process with the one provided by the file (an executable one) specified as the first argument. The whole space of your process is replaced by a fresh one...

May 21, 2020 · execl("/bin/ls", "ls", NULL); then the ls program is executed with the process id, current working dir and user/group (access rights) of the process that called execl. Afterwards, the original program is not running anymore. To start a new process, the fork system call is used.

Nov 11, 2018 · Aside: you'll probably find the execv*() functions more useful in general than the execl*() functions. At least, my experience is that the variable length argument list is more often needed by the programs I run than a fixed length list.