[bash light=”true”]
\n$command
\n$echo $?
\n0
\n$enable -n command
\n$command
\nbash: command: command not found
\n$echo $?
\n127
\n$enable command
\n$command
\n$enable -n enable
\n$enable
\nbash: enable: command not found
\n$
\n[\/bash]
\nRELATED SOURCE CODE EXPOSURE
\n[c light=”true”]
\n\/* Enable\/disable shell commands present in LIST. If list is not specified,
\n then print out a list of shell commands showing which are enabled and
\n which are disabled. *\/
\nint
\nenable_builtin (list)
\n WORD_LIST *list;
\n{
\n int result, flags;
\n int opt, filter;
\n#if defined (HAVE_DLOPEN) && defined (HAVE_DLSYM)
\n char *filename;
\n#endif<\/p>\n
result = EXECUTION_SUCCESS;
\n flags = 0;<\/p>\n
reset_internal_getopt ();
\n while ((opt = internal_getopt (list, "adnpsf:")) != -1)
\n {
\n switch (opt)
\n\t{
\n\tcase ‘a’:
\n\t flags |= AFLAG;
\n\t break;
\n\tcase ‘n’:
\n\t flags |= NFLAG;
\n\t break;
\n\tcase ‘p’:
\n\t flags |= PFLAG;
\n\t break;
\n\tcase ‘s’:
\n\t flags |= SFLAG;
\n\t break;
\n\tcase ‘f’:
\n#if defined (HAVE_DLOPEN) && defined (HAVE_DLSYM)
\n\t flags |= FFLAG;
\n\t filename = list_optarg;
\n\t break;
\n#else
\n\t builtin_error (_("dynamic loading not available"));
\n\t return (EX_USAGE);
\n#endif
\n#if defined (HAVE_DLCLOSE)
\n\tcase ‘d’:
\n\t flags |= DFLAG;
\n\t break;
\n#else
\n\t builtin_error (_("dynamic loading not available"));
\n\t return (EX_USAGE);
\n#endif \/* HAVE_DLCLOSE *\/
\n\tCASE_HELPOPT;
\n\tdefault:
\n\t builtin_usage ();
\n\t return (EX_USAGE);
\n\t}
\n }<\/p>\n
list = loptend;<\/p>\n
#if defined (RESTRICTED_SHELL)
\n \/* Restricted shells cannot load new builtins. *\/
\n if (restricted && (flags & (FFLAG|DFLAG)))
\n {
\n sh_restricted ((char *)NULL);
\n return (EXECUTION_FAILURE);
\n }
\n#endif<\/p>\n
if (list == 0 || (flags & PFLAG))
\n {
\n filter = (flags & AFLAG) ? (ENABLED | DISABLED)
\n\t\t\t : (flags & NFLAG) ? DISABLED : ENABLED;<\/p>\n
if (flags & SFLAG)
\n\tfilter |= SPECIAL;<\/p>\n
list_some_builtins (filter);
\n }
\n#if defined (HAVE_DLOPEN) && defined (HAVE_DLSYM)
\n else if (flags & FFLAG)
\n {
\n filter = (flags & NFLAG) ? DISABLED : ENABLED;
\n if (flags & SFLAG)
\n\tfilter |= SPECIAL;<\/p>\n
result = dyn_load_builtin (list, filter, filename);
\n#if defined (PROGRAMMABLE_COMPLETION)
\n set_itemlist_dirty (&it_builtins);
\n#endif
\n }
\n#endif
\n#if defined (HAVE_DLCLOSE)
\n else if (flags & DFLAG)
\n {
\n while (list)
\n\t{
\n\t opt = dyn_unload_builtin (list->word->word);
\n\t if (opt == EXECUTION_FAILURE)
\n\t result = EXECUTION_FAILURE;
\n\t list = list->next;
\n\t}
\n#if defined (PROGRAMMABLE_COMPLETION)
\n set_itemlist_dirty (&it_builtins);
\n#endif
\n }
\n#endif
\n else
\n {
\n while (list)
\n\t{
\n\t opt = enable_shell_command (list->word->word, flags & NFLAG);<\/p>\n
\t if (opt == EXECUTION_FAILURE)
\n\t {
\n\t sh_notbuiltin (list->word->word);
\n\t result = EXECUTION_FAILURE;
\n\t }
\n\t list = list->next;
\n\t}
\n }
\n return (result);
\n}
\n[\/c]
\nSOURCE CODE TAKEN FROM DEBIAN Bash SOURCE<\/p>\n","protected":false},"excerpt":{"rendered":"
[bash light=”true”] $command $echo $? 0 $enable -n command $command bash: command: command not found $echo $? 127 $enable command $command $enable -n enable $enable bash: enable: command not found $ [\/bash] RELATED SOURCE CODE EXPOSURE [c light=”true”] \/* Enable\/disable shell commands present in LIST. If list is not specified, then print out a list … <\/p>\n