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Homework and Emergencies Homework & Coursework Questions Command Doesn't Show Description Post 302407952 by Franklin52 on Saturday 27th of March 2010 09:23:19 AM
Old 03-27-2010
Something like this should work:
Code:
#include <stdio.h>
#include <stdlib.h>

extern char **environ;

void env()
{
  int i=0;

  for (i = 0; environ[i] !=NULL;i++)
  {
    printf(environ[i]);
    printf("\n");
  }
}

main()
{
  env();
}



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ENV(1)							    BSD General Commands Manual 						    ENV(1)

NAME
env -- set and print environment SYNOPSIS
env [-i] [name=value ...] [utility [argument ...]] DESCRIPTION
env executes utility after modifying the environment as specified on the command line. The option name=value specifies an environmental variable, name, with a value of value. The option '-i' causes env to completely ignore the environment it inherits. If no utility is specified, env prints out the names and values of the variables in the environment, with one name=value pair per line. DIAGNOSTICS
If the utility is invoked, the exit status of env shall be the exit status of utility; otherwise, the env utility exits with one of the fol- lowing values: 0 The env utility completed successfully 1-125 An error occurred in the env utility. 126 The utility specified by utility was found, but could not be invoked. 127 The utility specified by utility could not be found. COMPATIBILITY
The historic - option has been deprecated but is still supported in this implementation. SEE ALSO
execvp(3), environ(7) STANDARDS
The env utility conforms to IEEE Std 1003.2-1992 (``POSIX.2''). BUGS
env doesn't handle commands with equal (``='') signs in their names, for obvious reasons. BSD
August 27, 1993 BSD
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