Mercurial > hg > toybox
diff toys/other/printenv.c @ 653:2986aa63a021
Move commands into "posix", "lsb", and "other" menus/directories.
author | Rob Landley <rob@landley.net> |
---|---|
date | Sat, 25 Aug 2012 14:25:22 -0500 |
parents | toys/printenv.c@e0eed40f4ab1 |
children | 6df4ccc0acbe |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/toys/other/printenv.c Sat Aug 25 14:25:22 2012 -0500 @@ -0,0 +1,47 @@ +/* vi: set sw=4 ts=4: + * + * printenv.c - Print environment variables. + * + * Copyright 2012 Georgi Chorbadzhiyski <georgi@unixsol.org> + * + +USE_PRINTENV(NEWTOY(printenv, "0(null)", TOYFLAG_USR|TOYFLAG_BIN)) + +config PRINTENV + bool "printenv" + default y + help + usage: printenv [-0] [env_var...] + + Print environment variables. + + -0 Use \0 as delimiter instead of \n +*/ + +#include "toys.h" + +extern char **environ; + +void printenv_main(void) +{ + char **env, **var = toys.optargs; + char delim = '\n'; + + if (toys.optflags) delim = 0; + + do { + int catch = 0, len = *var ? strlen(*var) : 0; + + for (env = environ; *env; env++) { + char *out = *env; + if (*var) { + if (!strncmp(out, *var, len) && out[len] == '=') + out += len +1; + else continue; + } + xprintf("%s%c", out, delim); + catch++; + } + if (*var && !catch) toys.exitval = 1; + } while (*var && *(++var)); +}