71 lines
1.2 KiB
C
71 lines
1.2 KiB
C
/*
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* printenv -- minimal builtin clone of BSD printenv(1).
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*
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* usage: printenv [varname]
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*
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*/
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#include <config.h>
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#include <stdio.h>
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#include "builtins.h"
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#include "shell.h"
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#include "bashgetopt.h"
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extern char **export_env;
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int
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printenv_builtin (list)
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WORD_LIST *list;
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{
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register char **envp;
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int opt;
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SHELL_VAR *var;
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reset_internal_getopt ();
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while ((opt = internal_getopt (list, "")) != -1)
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{
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switch (opt)
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{
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default:
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builtin_usage ();
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return (EX_USAGE);
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}
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}
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list = loptend;
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/* printenv */
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if (list == 0)
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{
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maybe_make_export_env (); /* this allows minimal code */
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for (envp = export_env; *envp; envp++)
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printf ("%s\n", *envp);
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return (EXECUTION_SUCCESS);
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}
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/* printenv varname */
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var = find_variable (list->word->word);
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if (var == 0 || (exported_p (var) == 0))
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return (EXECUTION_FAILURE);
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if (function_p (var))
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print_var_function (var);
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else
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print_var_value (var, 0);
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return (EXECUTION_SUCCESS);
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}
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char *printenv_doc[] = {
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"print values of environment variables",
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(char *)NULL
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};
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struct builtin printenv_struct = {
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"printenv",
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printenv_builtin,
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BUILTIN_ENABLED,
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printenv_doc,
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"printenv [varname]",
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0
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};
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