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).