I am making a simple shell by using the fork and execvp. When I run my program and I type in a command like ls or ls -l it works just how I like it. When that gets done my program is sitting there waiting for another command, but when I put in another valid command or even putting in the same command. execvp is saying ls: cannot access 'ls': no such file or directory. I don't know why this is happening. I get the same results in running the program again.
Here is my code. I can't copy it through my virtual machine so I took a picture of it.(If someone would like to edit the formating on this that would be awesome. I tried looking at the help)
The problem in your code is that you don't reset the argument counter to 0 between command launches.
int tokenIndex=0;
do {
should be
int tokenIndex;
do {
tokenIndex=0;
The first time it works, but the second time you pass ls as argument of ls hence the message
(try typing ls ls in a shell you'll get the exact same message).