diff options
| -rw-r--r-- | toys/printenv.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/toys/printenv.c b/toys/printenv.c new file mode 100644 index 00000000..da75acdf --- /dev/null +++ b/toys/printenv.c @@ -0,0 +1,45 @@ +/* vi: set sw=4 ts=4: + * + * printenv.c - Print environment variables. + * + * Copyright 2012 Georgi Chorbadzhiyski <georgi@unixsol.org> + * + +USE_PRINTENV(NEWTOY(printenv, "0", TOYFLAG_USR|TOYFLAG_BIN)) + +config PRINTENV + bool "printenv" + default y + help + usage: printenv [-0] [env_var...] + Print enviroment variables. + + -0 Use \0 as environment delimiter instead of \n +*/ + +#include "toys.h" + +extern char **environ; + +void printenv_main(void) +{ + char **env; + char delim = '\n'; + + if (toys.optflags) + delim = '\0'; + + if (!toys.optargs[0]) { + for (env = environ; *env; env++) + xprintf("%s%c", *env, delim); + } else { + char **var = toys.optargs; + for (var = toys.optargs; *var; var++) { + int len = strlen(*var); + for (env = environ; *env; env++) { + if (strncmp(*env, *var, len) == 0) + xprintf("%s%c", *env + len + 1, delim); + } + } + } +} |