/* 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)); }