NAME

       popen_nosh,  pclose_nosh,  popen_execs,  pclose_execs, - pipe stream to or from a process without using a
       shell

SYNOPSIS

       #include <stdio.h>
       #include <execs.h>

       FILE *popen_nosh(const char *command, const char *type);
       int pclose_nosh(FILE *stream);

       FILE *popen_execsp(const char *command, const char *type);
       int pclose_execsp(FILE *stream);

       FILE *popen_execs(const char *path,const char *command, const char *type);
       int pclose_execs(FILE *stream);

       These functions are provided by libexecs. Link with -lexecs.

DESCRIPTION

       popen_nosh, popen_execsp and pclose_nosh are almost  drop  in  replacement  for  popen(3)  and  pclose(3)
       provided by the libc. popen_nosh and popen_execsp are synonyms: they parse the command string and run the
       command directly, without using a shell.
       Command arguments in args are delimited by space characters (blank, tabs or new lines).  Single or double
       quotes can be used to delimitate command arguments including spaces and a non quoted backslash (\) is the
       escape character to protect the next char. The executable file  is  sought  using  the  PATH  environment
       variable as explained for execlp(3).
       pclose_nosh closes a stream opened by popen_nosh.
       popen_execs requires the path of the executable to be specified as its first parameter so it does not use
       the PATH environment variable.  pclose_execs closes a stream opened by popen_execs.

RETURN VALUE

       These functions have the same return values of popen(3) and pclose(3).