Mercurial > hg > toybox
changeset 517:a191ea9bc5df
Implement printenv command.
author | Georgi Chorbadzhiyski <georgi@unixsol.org> |
---|---|
date | Sat, 03 Mar 2012 23:55:27 -0600 |
parents | ec7dd0ef7eae |
children | e0eed40f4ab1 |
files | toys/printenv.c |
diffstat | 1 files changed, 45 insertions(+), 0 deletions(-) [+] |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/toys/printenv.c Sat Mar 03 23:55:27 2012 -0600 @@ -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); + } + } + } +}