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/*
** ERRFIX.C - redirect stderr to some other file under MS-DOS
**
** by Bob Jarvis
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <process.h>
char *usage = "ERRFIX [filename] [prog] { {parm1} {parm2} ... {parmN} }\n"
" Redirects stderr to another file, then invokes a program\n"
" which will inherit the new definition of stderr.\n\n"
"Parameters:\n"
" filename (required) - the name of the file stderr should\n"
" be redirected to. Output written to stderr will\n"
" be routed to this file instead of the console.\n"
" prog (required) - name of the program to be run.\n"
" parm1...parmN (optional) - command-line parameters needed\n"
" to run the program specified by the 'prog' argument.";
int main(int argc, char *argv[])
{
char **args = argv;
if (3 > argc)
{
printf(usage);
return 1;
}
if (NULL != argv[argc]) /* may be a problem under some compilers */
{
args = malloc((argc+1) * sizeof(char *));
if (NULL == args)
{
printf("Unable to allocate storage");
return 2;
}
memcpy(args, argv, argc * sizeof(char *));
args[argc] = NULL;
}
freopen(args[1], "w", stderr);
spawnvp(0, args[2], &args[2]);
return 0;
}
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