Added src/mkdir.c, src/rm.c, some tips for commiters and close file descriptor in src/touch.c

STYLE.MD

@@ -70,3 +70,12 @@ chmod("whatever",420)
 chmod("whatever",420) /* 420 is 644 in decimal
 
 ~~~
+
+## For commiters
+
+Commiters may or may not be anonymous. If you want to be
+anonymous. Set whatever you want to git name and git email.
+
+If you don't want to be anonymous, you should sign your commits using
+gpg. See
+[this]https://docs.gitlab.com/ee/user/project/repository/gpg_signed_commits/()

TODO

@@ -0,0 +1,3 @@
+* The rest of programs.
+* Manuals
+* flags for the programs

src/mkdir.c

@@ -0,0 +1,22 @@
+#include <stdio.h>
+#include <sys/stat.h>
+
+int
+main(int argc, char *argv[])
+{
+  if (argc == 1)
+    {
+      fprintf(stderr,"specify path(s) to make\n");
+      return 1;
+    }
+  for(int i = 1; i<argc;i++)
+    {
+      int fd = mkdir(argv[i],420);
+      if(fd == -1)
+	{
+	  fprintf(stderr,"Error creating dir %s\n",argv[i]);
+	  return 1;
+	}
+    }
+  return 0;
+}

src/rm.c

@@ -0,0 +1,22 @@
+#include <stdio.h>
+
+int
+main(int argc, char *argv[])
+{
+  if (argc == 1)
+    {
+      printf("Specify files to remove.\n");
+      return 1;
+    }
+  
+  for(int i = 1; i<argc;i++)
+    {
+      int fd = remove(argv[i]);
+      if(fd == -1)
+        {
+          fprintf(stderr,"Error removing file: %s\n",argv[i]);
+
+        }
+    }
+  return 0;
+}

src/touch.c

@@ -1,6 +1,7 @@
 #include <fcntl.h>
 #include <stdio.h>
 #include <sys/stat.h>
+#include <unistd.h>
 
 int
 main(int argc, char *argv[])
@@ -19,5 +20,6 @@ main(int argc, char *argv[])
       return 1;
     }
   chmod(argv[1],420); /* 644 in decimal */
+  close(fd);
   return 0;
 }