C language to call Linux commands

C language to call Linux commands-general Linux technology-Linux programming and kernel information, the following is a detailed description. System (""); popen

Exec Series

Execl and other similar functions can execute commands in any shell.

# Include

Int
Main (){
System ("ls-l ");
Return 1;
}

Or

Int execl (const char * path, const char * arg ,...);
Int execlp (const char * file, const char * arg ,...);
Int execle (const char * path, const char * arg,..., char * const envp []);
Int execv (const char * path, char * const argv []);
Int execvp (const char * file, char * const argv []);

Alternatively, the difference is that the former can be executed but not exited. After the latter is executed, it will be released correctly. If the error is returned, it will not exit. Continue with the following statement.