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authorGeorgi Chorbadzhiyski <georgi@unixsol.org>2012-03-03 23:55:27 -0600
committerGeorgi Chorbadzhiyski <georgi@unixsol.org>2012-03-03 23:55:27 -0600
commit2790105914ea20aaa26d71899be1f12422270349 (patch)
tree1589dfac21ced105c13fa4e2669fcfe07603401f /toys
parent2b7b1ad04bbbbadd61067f46c6f24264a318d666 (diff)
downloadtoybox-2790105914ea20aaa26d71899be1f12422270349.tar.gz
Implement printenv command.
Diffstat (limited to 'toys')
-rw-r--r--toys/printenv.c45
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);
+ }
+ }
+ }
+}