X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=cmd%2Fnvedit.c;h=81d94cd193c6dd6c03d4c843cc6cae2a1284575a;hb=995972ddbbcc5fccd324ab384bca9af90e710755;hp=4033d90c8e2dd043384b93ba005fd15e1e93447c;hpb=1fdafb2e3dfecdc4129a8062ad25b1adb32b0efb;p=oweals%2Fu-boot.git diff --git a/cmd/nvedit.c b/cmd/nvedit.c index 4033d90c8e..81d94cd193 100644 --- a/cmd/nvedit.c +++ b/cmd/nvedit.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0+ /* * (C) Copyright 2000-2013 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. @@ -6,8 +7,6 @@ * Andreas Heppel * * Copyright 2011 Freescale Semiconductor, Inc. - * - * SPDX-License-Identifier: GPL-2.0+ */ /* @@ -28,11 +27,13 @@ #include #include #include -#include +#include +#include #include #include #include #include +#include #include #include #include @@ -40,21 +41,26 @@ DECLARE_GLOBAL_DATA_PTR; -#if !defined(CONFIG_ENV_IS_IN_EEPROM) && \ - !defined(CONFIG_ENV_IS_IN_FLASH) && \ - !defined(CONFIG_ENV_IS_IN_DATAFLASH) && \ - !defined(CONFIG_ENV_IS_IN_MMC) && \ - !defined(CONFIG_ENV_IS_IN_FAT) && \ - !defined(CONFIG_ENV_IS_IN_EXT4) && \ - !defined(CONFIG_ENV_IS_IN_NAND) && \ - !defined(CONFIG_ENV_IS_IN_NVRAM) && \ - !defined(CONFIG_ENV_IS_IN_ONENAND) && \ - !defined(CONFIG_ENV_IS_IN_SATA) && \ - !defined(CONFIG_ENV_IS_IN_SPI_FLASH) && \ - !defined(CONFIG_ENV_IS_IN_REMOTE) && \ - !defined(CONFIG_ENV_IS_IN_UBI) && \ +#if defined(CONFIG_ENV_IS_IN_EEPROM) || \ + defined(CONFIG_ENV_IS_IN_FLASH) || \ + defined(CONFIG_ENV_IS_IN_MMC) || \ + defined(CONFIG_ENV_IS_IN_FAT) || \ + defined(CONFIG_ENV_IS_IN_EXT4) || \ + defined(CONFIG_ENV_IS_IN_NAND) || \ + defined(CONFIG_ENV_IS_IN_NVRAM) || \ + defined(CONFIG_ENV_IS_IN_ONENAND) || \ + defined(CONFIG_ENV_IS_IN_SATA) || \ + defined(CONFIG_ENV_IS_IN_SPI_FLASH) || \ + defined(CONFIG_ENV_IS_IN_REMOTE) || \ + defined(CONFIG_ENV_IS_IN_UBI) + +#define ENV_IS_IN_DEVICE + +#endif + +#if !defined(ENV_IS_IN_DEVICE) && \ !defined(CONFIG_ENV_IS_NOWHERE) -# error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|DATAFLASH|MMC|FAT|EXT4|\ +# error Define one of CONFIG_ENV_IS_IN_{EEPROM|FLASH|MMC|FAT|EXT4|\ NAND|NVRAM|ONENAND|SATA|SPI_FLASH|REMOTE|UBI} or CONFIG_ENV_IS_NOWHERE #endif @@ -65,14 +71,14 @@ NAND|NVRAM|ONENAND|SATA|SPI_FLASH|REMOTE|UBI} or CONFIG_ENV_IS_NOWHERE /* * This variable is incremented on each do_env_set(), so it can - * be used via get_env_id() as an indication, if the environment + * be used via env_get_id() as an indication, if the environment * has changed or not. So it is possible to reread an environment * variable only if the environment was changed ... done so for * example in NetInitLoop() */ static int env_id = 1; -int get_env_id(void) +int env_get_id(void) { return env_id; } @@ -89,11 +95,11 @@ static int env_print(char *name, int flag) ssize_t len; if (name) { /* print a single name */ - ENTRY e, *ep; + struct env_entry e, *ep; e.key = name; e.data = NULL; - hsearch_r(e, FIND, &ep, &env_htab, flag); + hsearch_r(e, ENV_FIND, &ep, &env_htab, flag); if (ep == NULL) return 0; len = printf("%s=%s\n", ep->key, ep->data); @@ -121,6 +127,11 @@ static int do_env_print(cmd_tbl_t *cmdtp, int flag, int argc, int rcode = 0; int env_flag = H_HIDE_DOT; +#if defined(CONFIG_CMD_NVEDIT_EFI) + if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'e') + return do_env_print_efi(cmdtp, flag, --argc, ++argv); +#endif + if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'a') { argc--; argv++; @@ -215,9 +226,15 @@ static int _do_env_set(int flag, int argc, char * const argv[], int env_flag) { int i, len; char *name, *value, *s; - ENTRY e, *ep; + struct env_entry e, *ep; debug("Initial value for argc=%d\n", argc); + +#if CONFIG_IS_ENABLED(CMD_NVEDIT_EFI) + if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'e') + return do_env_set_efi(NULL, flag, --argc, ++argv); +#endif + while (argc > 1 && **(argv + 1) == '-') { char *arg = *++argv; @@ -272,7 +289,7 @@ static int _do_env_set(int flag, int argc, char * const argv[], int env_flag) e.key = name; e.data = value; - hsearch_r(e, ENTER, &ep, &env_htab, env_flag); + hsearch_r(e, ENV_ENTER, &ep, &env_htab, env_flag); free(value); if (!ep) { printf("## Error inserting \"%s\" variable, errno=%d\n", @@ -342,6 +359,24 @@ ulong env_get_hex(const char *varname, ulong default_val) return value; } +int eth_env_get_enetaddr(const char *name, uint8_t *enetaddr) +{ + string_to_enetaddr(env_get(name), enetaddr); + return is_valid_ethaddr(enetaddr); +} + +int eth_env_set_enetaddr(const char *name, const uint8_t *enetaddr) +{ + char buf[ARP_HLEN_ASCII + 1]; + + if (eth_env_get_enetaddr(name, (uint8_t *)buf)) + return -EEXIST; + + sprintf(buf, "%pM", enetaddr); + + return env_set(name, buf); +} + #ifndef CONFIG_SPL_BUILD static int do_env_set(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { @@ -393,15 +428,18 @@ int do_env_ask(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) sprintf(message, "Please enter '%s': ", argv[1]); } else { /* env_ask envname message1 ... messagen [size] */ - for (i = 2, pos = 0; i < argc; i++) { + for (i = 2, pos = 0; i < argc && pos+1 < sizeof(message); i++) { if (pos) message[pos++] = ' '; - strcpy(message + pos, argv[i]); + strncpy(message + pos, argv[i], sizeof(message) - pos); pos += strlen(argv[i]); } - message[pos++] = ' '; - message[pos] = '\0'; + if (pos < sizeof(message) - 1) { + message[pos++] = ' '; + message[pos] = '\0'; + } else + message[CONFIG_SYS_CBSIZE - 1] = '\0'; } if (size >= CONFIG_SYS_CBSIZE) @@ -436,7 +474,7 @@ static int print_static_binding(const char *var_name, const char *callback_name, return 0; } -static int print_active_callback(ENTRY *entry) +static int print_active_callback(struct env_entry *entry) { struct env_clbk_tbl *clbkp; int i; @@ -517,7 +555,7 @@ static int print_static_flags(const char *var_name, const char *flags, return 0; } -static int print_active_flags(ENTRY *entry) +static int print_active_flags(struct env_entry *entry) { enum env_flags_vartype type; enum env_flags_varaccess access; @@ -625,13 +663,13 @@ static int do_env_edit(cmd_tbl_t *cmdtp, int flag, int argc, char *env_get(const char *name) { if (gd->flags & GD_FLG_ENV_READY) { /* after import into hashtable */ - ENTRY e, *ep; + struct env_entry e, *ep; WATCHDOG_RESET(); e.key = name; e.data = NULL; - hsearch_r(e, FIND, &ep, &env_htab, 0); + hsearch_r(e, ENV_FIND, &ep, &env_htab, 0); return ep ? ep->data : NULL; } @@ -643,28 +681,50 @@ char *env_get(const char *name) return NULL; } +/* + * Like env_get, but prints an error if envvar isn't defined in the + * environment. It always returns what env_get does, so it can be used in + * place of env_get without changing error handling otherwise. + */ +char *from_env(const char *envvar) +{ + char *ret; + + ret = env_get(envvar); + + if (!ret) + printf("missing environment variable: %s\n", envvar); + + return ret; +} + /* * Look up variable from environment for restricted C runtime env. */ int env_get_f(const char *name, char *buf, unsigned len) { - int i, nxt; + int i, nxt, c; for (i = 0; env_get_char(i) != '\0'; i = nxt + 1) { int val, n; - for (nxt = i; env_get_char(nxt) != '\0'; ++nxt) { + for (nxt = i; (c = env_get_char(nxt)) != '\0'; ++nxt) { + if (c < 0) + return c; if (nxt >= CONFIG_ENV_SIZE) return -1; } - val = envmatch((uchar *)name, i); + val = env_match((uchar *)name, i); if (val < 0) continue; /* found; copy out */ for (n = 0; n < len; ++n, ++buf) { - *buf = env_get_char(val++); + c = env_get_char(val++); + if (c < 0) + return c; + *buf = c; if (*buf == '\0') return n; } @@ -672,8 +732,8 @@ int env_get_f(const char *name, char *buf, unsigned len) if (n) *--buf = '\0'; - printf("env_buf [%d bytes] too small for value of \"%s\"\n", - len, name); + printf("env_buf [%u bytes] too small for value of \"%s\"\n", + len, name); return n; } @@ -684,7 +744,7 @@ int env_get_f(const char *name, char *buf, unsigned len) /** * Decode the integer value of an environment variable and return it. * - * @param name Name of environemnt variable + * @param name Name of environment variable * @param base Number base to use (normally 10, or 16 for hex) * @param default_val Default value to return if the variable is not * found @@ -702,14 +762,10 @@ ulong env_get_ulong(const char *name, int base, ulong default_val) } #ifndef CONFIG_SPL_BUILD -#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) +#if defined(CONFIG_CMD_SAVEENV) && defined(ENV_IS_IN_DEVICE) static int do_env_save(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { - struct env_driver *env = env_driver_lookup_default(); - - printf("Saving Environment to %s...\n", env->name); - return env_save() ? 1 : 0; } @@ -718,18 +774,24 @@ U_BOOT_CMD( "save environment variables to persistent storage", "" ); + +#if defined(CONFIG_CMD_ERASEENV) +static int do_env_erase(cmd_tbl_t *cmdtp, int flag, int argc, + char * const argv[]) +{ + return env_erase() ? 1 : 0; +} + +U_BOOT_CMD( + eraseenv, 1, 0, do_env_erase, + "erase environment variables from persistent storage", + "" +); +#endif #endif #endif /* CONFIG_SPL_BUILD */ - -/* - * Match a name / name=value pair - * - * s1 is either a simple 'name', or a 'name=value' pair. - * i2 is the environment index for a 'name2=value2' pair. - * If the names match, return the index for the value2, else -1. - */ -int envmatch(uchar *s1, int i2) +int env_match(uchar *s1, int i2) { if (s1 == NULL) return -1; @@ -745,10 +807,10 @@ int envmatch(uchar *s1, int i2) } #ifndef CONFIG_SPL_BUILD -static int do_env_default(cmd_tbl_t *cmdtp, int __flag, +static int do_env_default(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { - int all = 0, flag = 0; + int all = 0, env_flag = H_INTERACTIVE; debug("Initial value for argc=%d\n", argc); while (--argc > 0 && **++argv == '-') { @@ -760,7 +822,7 @@ static int do_env_default(cmd_tbl_t *cmdtp, int __flag, all = 1; break; case 'f': /* force */ - flag |= H_FORCE; + env_flag |= H_FORCE; break; default: return cmd_usage(cmdtp); @@ -770,12 +832,13 @@ static int do_env_default(cmd_tbl_t *cmdtp, int __flag, debug("Final value for argc=%d\n", argc); if (all && (argc == 0)) { /* Reset the whole environment */ - set_default_env("## Resetting to default environment\n"); + env_set_default("## Resetting to default environment\n", + env_flag); return 0; } if (!all && (argc > 0)) { /* Reset individual variables */ - set_default_vars(argc, argv); + env_set_default_vars(argc, argv, env_flag); return 0; } @@ -927,7 +990,8 @@ NXTARG: ; H_MATCH_KEY | H_MATCH_IDENT, &ptr, size, argc, argv); if (len < 0) { - error("Cannot export environment: errno = %d\n", errno); + pr_err("## Error: Cannot export environment: errno = %d\n", + errno); return 1; } sprintf(buf, "%zX", (size_t)len); @@ -947,14 +1011,16 @@ NXTARG: ; H_MATCH_KEY | H_MATCH_IDENT, &res, ENV_SIZE, argc, argv); if (len < 0) { - error("Cannot export environment: errno = %d\n", errno); + pr_err("## Error: Cannot export environment: errno = %d\n", + errno); return 1; } if (chk) { - envp->crc = crc32(0, envp->data, ENV_SIZE); + envp->crc = crc32(0, envp->data, + size ? size - offsetof(env_t, data) : ENV_SIZE); #ifdef CONFIG_ENV_ADDR_REDUND - envp->flags = ACTIVE_FLAG; + envp->flags = ENV_REDUND_ACTIVE; #endif } env_set_hex("filesize", len + offsetof(env_t, data)); @@ -962,15 +1028,19 @@ NXTARG: ; return 0; sep_err: - printf("## %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", cmd); + printf("## Error: %s: only one of \"-b\", \"-c\" or \"-t\" allowed\n", + cmd); return 1; } #endif #ifdef CONFIG_CMD_IMPORTENV /* - * env import [-d] [-t [-r] | -b | -c] addr [size] - * -d: delete existing environment before importing; + * env import [-d] [-t [-r] | -b | -c] addr [size] [var ...] + * -d: delete existing environment before importing if no var is + * passed; if vars are passed, if one var is in the current + * environment but not in the environment at addr, delete var from + * current environment; * otherwise overwrite / append to existing definitions * -t: assume text format; either "size" must be given or the * text data must be '\0' terminated @@ -983,6 +1053,11 @@ sep_err: * addr: memory address to read from * size: length of input data; if missing, proper '\0' * termination is mandatory + * if var is set and size should be missing (i.e. '\0' + * termination), set size to '-' + * var... List of the names of the only variables that get imported from + * the environment at address 'addr'. Without arguments, the whole + * environment gets imported. */ static int do_env_import(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) @@ -994,6 +1069,7 @@ static int do_env_import(cmd_tbl_t *cmdtp, int flag, int fmt = 0; int del = 0; int crlf_is_lf = 0; + int wl = 0; size_t size; cmd = *argv; @@ -1042,9 +1118,9 @@ static int do_env_import(cmd_tbl_t *cmdtp, int flag, addr = simple_strtoul(argv[0], NULL, 16); ptr = map_sysmem(addr, 0); - if (argc == 2) { + if (argc >= 2 && strcmp(argv[1], "-")) { size = simple_strtoul(argv[1], NULL, 16); - } else if (argc == 1 && chk) { + } else if (chk) { puts("## Error: external checksum format must pass size\n"); return CMD_RET_FAILURE; } else { @@ -1066,6 +1142,9 @@ static int do_env_import(cmd_tbl_t *cmdtp, int flag, printf("## Info: input data size = %zu = 0x%zX\n", size, size); } + if (argc > 2) + wl = 1; + if (chk) { uint32_t crc; env_t *ep = (env_t *)ptr; @@ -1080,9 +1159,10 @@ static int do_env_import(cmd_tbl_t *cmdtp, int flag, ptr = (char *)ep->data; } - if (himport_r(&env_htab, ptr, size, sep, del ? 0 : H_NOCLEAR, - crlf_is_lf, 0, NULL) == 0) { - error("Environment import failed: errno = %d\n", errno); + if (!himport_r(&env_htab, ptr, size, sep, del ? 0 : H_NOCLEAR, + crlf_is_lf, wl ? argc - 2 : 0, wl ? &argv[2] : NULL)) { + pr_err("## Error: Environment import failed: errno = %d\n", + errno); return 1; } gd->flags |= GD_FLG_ENV_READY; @@ -1096,18 +1176,118 @@ sep_err: } #endif +#if defined(CONFIG_CMD_NVEDIT_INFO) +/* + * print_env_info - print environment information + */ +static int print_env_info(void) +{ + const char *value; + + /* print environment validity value */ + switch (gd->env_valid) { + case ENV_INVALID: + value = "invalid"; + break; + case ENV_VALID: + value = "valid"; + break; + case ENV_REDUND: + value = "redundant"; + break; + default: + value = "unknown"; + break; + } + printf("env_valid = %s\n", value); + + /* print environment ready flag */ + value = gd->flags & GD_FLG_ENV_READY ? "true" : "false"; + printf("env_ready = %s\n", value); + + /* print environment using default flag */ + value = gd->flags & GD_FLG_ENV_DEFAULT ? "true" : "false"; + printf("env_use_default = %s\n", value); + + return CMD_RET_SUCCESS; +} + +#define ENV_INFO_IS_DEFAULT BIT(0) /* default environment bit mask */ +#define ENV_INFO_IS_PERSISTED BIT(1) /* environment persistence bit mask */ + +/* + * env info - display environment information + * env info [-d] - evaluate whether default environment is used + * env info [-p] - evaluate whether environment can be persisted + */ +static int do_env_info(cmd_tbl_t *cmdtp, int flag, + int argc, char * const argv[]) +{ + int eval_flags = 0; + int eval_results = 0; + + /* display environment information */ + if (argc <= 1) + return print_env_info(); + + /* process options */ + while (--argc > 0 && **++argv == '-') { + char *arg = *argv; + + while (*++arg) { + switch (*arg) { + case 'd': + eval_flags |= ENV_INFO_IS_DEFAULT; + break; + case 'p': + eval_flags |= ENV_INFO_IS_PERSISTED; + break; + default: + return CMD_RET_USAGE; + } + } + } + + /* evaluate whether default environment is used */ + if (eval_flags & ENV_INFO_IS_DEFAULT) { + if (gd->flags & GD_FLG_ENV_DEFAULT) { + printf("Default environment is used\n"); + eval_results |= ENV_INFO_IS_DEFAULT; + } else { + printf("Environment was loaded from persistent storage\n"); + } + } + + /* evaluate whether environment can be persisted */ + if (eval_flags & ENV_INFO_IS_PERSISTED) { +#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) + printf("Environment can be persisted\n"); + eval_results |= ENV_INFO_IS_PERSISTED; +#else + printf("Environment cannot be persisted\n"); +#endif + } + + /* The result of evaluations is combined with AND */ + if (eval_flags != eval_results) + return CMD_RET_FAILURE; + + return CMD_RET_SUCCESS; +} +#endif + #if defined(CONFIG_CMD_ENV_EXISTS) static int do_env_exists(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { - ENTRY e, *ep; + struct env_entry e, *ep; if (argc < 2) return CMD_RET_USAGE; e.key = argv[1]; e.data = NULL; - hsearch_r(e, FIND, &ep, &env_htab, 0); + hsearch_r(e, ENV_FIND, &ep, &env_htab, 0); return (ep == NULL) ? 1 : 0; } @@ -1139,13 +1319,19 @@ static cmd_tbl_t cmd_env_sub[] = { #endif #if defined(CONFIG_CMD_IMPORTENV) U_BOOT_CMD_MKENT(import, 5, 0, do_env_import, "", ""), +#endif +#if defined(CONFIG_CMD_NVEDIT_INFO) + U_BOOT_CMD_MKENT(info, 2, 0, do_env_info, "", ""), #endif U_BOOT_CMD_MKENT(print, CONFIG_SYS_MAXARGS, 1, do_env_print, "", ""), #if defined(CONFIG_CMD_RUN) U_BOOT_CMD_MKENT(run, CONFIG_SYS_MAXARGS, 1, do_run, "", ""), #endif -#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) +#if defined(CONFIG_CMD_SAVEENV) && defined(ENV_IS_IN_DEVICE) U_BOOT_CMD_MKENT(save, 1, 0, do_env_save, "", ""), +#if defined(CONFIG_CMD_ERASEENV) + U_BOOT_CMD_MKENT(erase, 1, 0, do_env_erase, "", ""), +#endif #endif U_BOOT_CMD_MKENT(set, CONFIG_SYS_MAXARGS, 0, do_env_set, "", ""), #if defined(CONFIG_CMD_ENV_EXISTS) @@ -1210,14 +1396,29 @@ static char env_help_text[] = #endif #endif #if defined(CONFIG_CMD_IMPORTENV) - "env import [-d] [-t [-r] | -b | -c] addr [size] - import environment\n" + "env import [-d] [-t [-r] | -b | -c] addr [size] [var ...] - import environment\n" +#endif +#if defined(CONFIG_CMD_NVEDIT_INFO) + "env info - display environment information\n" + "env info [-d] - whether default environment is used\n" + "env info [-p] - whether environment can be persisted\n" #endif "env print [-a | name ...] - print environment\n" +#if defined(CONFIG_CMD_NVEDIT_EFI) + "env print -e [-guid guid|-all][-n] [name ...] - print UEFI environment\n" +#endif #if defined(CONFIG_CMD_RUN) "env run var [...] - run commands in an environment variable\n" #endif -#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE) +#if defined(CONFIG_CMD_SAVEENV) && defined(ENV_IS_IN_DEVICE) "env save - save environment\n" +#if defined(CONFIG_CMD_ERASEENV) + "env erase - erase environment\n" +#endif +#endif +#if defined(CONFIG_CMD_NVEDIT_EFI) + "env set -e [-nv][-bs][-rt][-a][-i addr,size][-v] name [arg ...]\n" + " - set UEFI variable; unset if '-i' or 'arg' not specified\n" #endif "env set [-f] name [arg ...]\n"; #endif @@ -1245,6 +1446,11 @@ U_BOOT_CMD_COMPLETE( printenv, CONFIG_SYS_MAXARGS, 1, do_env_print, "print environment variables", "[-a]\n - print [all] values of all environment variables\n" +#if defined(CONFIG_CMD_NVEDIT_EFI) + "printenv -e [-guid guid|-all][-n] [name ...]\n" + " - print UEFI variable 'name' or all the variables\n" + " \"-n\": suppress dumping variable's value\n" +#endif "printenv name ...\n" " - print value of environment variable 'name'", var_complete @@ -1272,7 +1478,20 @@ U_BOOT_CMD_COMPLETE( U_BOOT_CMD_COMPLETE( setenv, CONFIG_SYS_MAXARGS, 0, do_env_set, "set environment variables", - "[-f] name value ...\n" +#if defined(CONFIG_CMD_NVEDIT_EFI) + "-e [-guid guid][-nv][-bs][-rt][-a][-v]\n" + " [-i addr,size name], or [name [value ...]]\n" + " - set UEFI variable 'name' to 'value' ...'\n" + " \"-guid\": set vendor guid\n" + " \"-nv\": set non-volatile attribute\n" + " \"-bs\": set boot-service attribute\n" + " \"-rt\": set runtime attribute\n" + " \"-a\": append-write\n" + " \"-i addr,size\": use as variable's value\n" + " \"-v\": verbose message\n" + " - delete UEFI variable 'name' if 'value' not specified\n" +#endif + "setenv [-f] name value ...\n" " - [forcibly] set environment variable 'name' to 'value ...'\n" "setenv [-f] name\n" " - [forcibly] delete environment variable 'name'",