diff options
Diffstat (limited to 'shell/ash.c')
| -rw-r--r-- | shell/ash.c | 61 |
1 files changed, 60 insertions, 1 deletions
diff --git a/shell/ash.c b/shell/ash.c index 99460d3..4250f50 100644 --- a/shell/ash.c +++ b/shell/ash.c @@ -1603,6 +1603,7 @@ static int exitcmd (int, char **); static int exportcmd (int, char **); static int histcmd (int, char **); static int hashcmd (int, char **); +static int helpcmd (int, char **); static int jobscmd (int, char **); static int localcmd (int, char **); #ifndef BB_PWD @@ -1704,6 +1705,7 @@ static const struct builtincmd builtincmds[] = { { BUILTIN_REGULAR "getopts", getoptscmd }, #endif { BUILTIN_NOSPEC "hash", hashcmd }, + { BUILTIN_NOSPEC "help", helpcmd }, { BUILTIN_REGULAR "jobs", jobscmd }, #ifdef JOBS { BUILTIN_REGULAR "kill", killcmd }, @@ -3274,6 +3276,7 @@ static void setinteractive(int on) { static int is_interactive; + static int do_banner=0; if (on == is_interactive) return; @@ -3282,6 +3285,12 @@ setinteractive(int on) setsignal(SIGTERM); chkmail(1); is_interactive = on; + if (do_banner==0 && is_interactive) { + /* Looks like they want an interactive shell */ + printf( "\n\n" BB_BANNER " Built-in shell (ash)\n"); + printf( "Enter 'help' for a list of built-in commands.\n\n"); + do_banner=1; + } } static void @@ -3802,6 +3811,51 @@ printentry(cmdp, verbose) +/*** List the available builtins ***/ + + +static int helpcmd(int argc, char** argv) +{ + int col, i; + const struct builtincmd *x; + + printf("\nBuilt-in commands:\n"); + printf("-------------------\n"); + for (col=0, i=0, x = builtincmds; i < NUMBUILTINS; x++, i++) { + if (!x->name || ! (x->name+1)) + continue; + col += printf("%s%s", ((col == 0) ? "\t" : " "), + (x->name+1)); + if (col > 60) { + printf("\n"); + col = 0; + } + } +#ifdef BB_FEATURE_SH_STANDALONE_SHELL + { + const struct BB_applet *applet; + extern const struct BB_applet applets[]; + extern const size_t NUM_APPLETS; + + for (i=0, applet = applets; i < NUM_APPLETS; applet++, i++) { + if (!applet->name) + continue; + + col += printf("%s%s", ((col == 0) ? "\t" : " "), + applet->name); + if (col > 60) { + printf("\n"); + col = 0; + } + } + } +#endif + printf("\n\n"); + return EXIT_SUCCESS; +} + + + /* * Resolve a command name. If you change this routine, you may have to * change the shellexec routine as well. @@ -7755,6 +7809,11 @@ shell_main(argc, argv) EXECCMD = find_builtin("exec"); EVALCMD = find_builtin("eval"); +#ifndef BB_FEATURE_SH_FANCY_PROMPT + unsetenv("PS1"); + unsetenv("PS2"); +#endif + #if PROFILE monitor(4, etext, profile_buf, sizeof profile_buf, 50); #endif @@ -13088,7 +13147,7 @@ findvar(struct var **vpp, const char *name) /* * Copyright (c) 1999 Herbert Xu <herbert@debian.org> * This file contains code for the times builtin. - * $Id: ash.c,v 1.6 2001/07/06 04:26:23 andersen Exp $ + * $Id: ash.c,v 1.7 2001/07/07 00:05:55 andersen Exp $ */ static int timescmd (int argc, char **argv) { |