49 lines
720 B
C
49 lines
720 B
C
#ifndef lint
|
|
static char sccsid[] = "@(#)printenv.c 1.1 92/07/30 SMI"; /* from UCB 4.1 10/02/80 */
|
|
#endif
|
|
/*
|
|
* printenv
|
|
*
|
|
* Bill Joy, UCB
|
|
* February, 1979
|
|
*/
|
|
|
|
extern char **environ;
|
|
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
register char **ep;
|
|
int found = 0;
|
|
|
|
argc--, argv++;
|
|
if (environ)
|
|
for (ep = environ; *ep; ep++)
|
|
if (argc == 0 || prefix(argv[0], *ep)) {
|
|
register char *cp = *ep;
|
|
|
|
found++;
|
|
if (argc) {
|
|
while (*cp && *cp != '=')
|
|
cp++;
|
|
if (*cp == '=')
|
|
cp++;
|
|
}
|
|
printf("%s\n", cp);
|
|
}
|
|
exit (!found);
|
|
/* NOTREACHED */
|
|
}
|
|
|
|
prefix(cp, dp)
|
|
char *cp, *dp;
|
|
{
|
|
|
|
while (*cp && *dp && *cp == *dp)
|
|
cp++, dp++;
|
|
if (*cp == 0)
|
|
return (*dp == '=');
|
|
return (0);
|
|
}
|