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/* printenv -- minimal clone of BSD printenv(1).
usage: printenv [varname]
Chet Ramey
chet@po.cwru.edu
*/
extern char **environ;
int
main (argc, argv)
int argc;
char **argv;
{
register char **envp, *eval;
int len;
argv++;
argc--;
/* printenv */
if (argc == 0)
{
for (envp = environ; *envp; envp++)
puts (*envp);
exit (0);
}
/* printenv varname */
len = strlen (*argv);
for (envp = environ; *envp; envp++)
{
if (**argv == **envp && strncmp (*envp, *argv, len) == 0)
{
eval = *envp + len;
/* If the environment variable doesn't have an `=', ignore it. */
if (*eval == '=')
{
puts (eval + 1);
exit (0);
}
}
}
exit (1);
}
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