1 files changed, 4 insertions, 0 deletions

diff --git a/cmd.h b/cmd.h
index c094e04..38b3fa1 100644
--- a/cmd.h
+++ b/cmd.h
@@ -4,6 +4,7 @@
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 typedef enum {
     CMD_TYPE_NORMAL,
@@ -21,6 +22,9 @@ typedef struct Command {
     struct Command *right; // a pointer to the right sub-command
 } Command;
 
+Command* newcmd();
 int runcmd(Command *cmd);
+void freecmd(Command *cmd);
+void printcmd(Command *cmd);
 
 #endif
\ No newline at end of file