10 files changed, 187 insertions, 5 deletions
diff --git a/dev/c/src/basic/Makefile b/dev/c/src/basic/Makefile
index f165c15..88f7890 100644
--- a/dev/c/src/basic/Makefile
+++ b/dev/c/src/basic/Makefile
@@ -1,7 +1,7 @@
 CC=gcc
 CFLAGS=-Wall
 
-basic-c: main.o basic.o
+shell: shell.c
 
 clean:
-	rm -f *.o basic-c
+	rm -f *.o shell
diff --git a/dev/c/src/basic/shell.c b/dev/c/src/basic/shell.c
new file mode 100644
index 0000000..addc8a7
--- /dev/null
+++ b/dev/c/src/basic/shell.c
@@ -0,0 +1,57 @@
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <errno.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+char *getinput(char *buffer, size_t buflen) {
+	printf("$$ ");
+	return fgets(buffer, buflen, stdin);
+}
+
+void sig_int(int signo) {
+	printf("\nCaught SIGINT (Signal #%d)!\n$$ ", signo);
+	(void)fflush(stdout);
+}
+
+int main(int argc, char **argv) {
+	char buf[BUFSIZ];
+	pid_t pid;
+	int status;
+
+	/* cast to void to silence compiler warnings */
+	(void)argc;
+	(void)argv;
+
+	if (signal(SIGINT, sig_int) == SIG_ERR) {
+		fprintf(stderr, "signal error: %s\n", strerror(errno));
+		exit(1);
+	}
+
+	while (getinput(buf, sizeof(buf))) {
+		buf[strlen(buf) - 1] = '\0';
+
+		if((pid=fork()) == -1) {
+			fprintf(stderr, "shell: can't fork: %s\n",
+					strerror(errno));
+			continue;
+		} else if (pid == 0) {   /* child */
+			execlp(buf, buf, (char *)0);
+			fprintf(stderr, "shell: couldn't exec %s: %s\n", buf,
+					strerror(errno));
+			exit(EX_UNAVAILABLE);
+		}
+
+		/* parent waits */
+		if ((pid=waitpid(pid, &status, 0)) < 0) {
+			fprintf(stderr, "shell: waitpid error: %s\n",
+					strerror(errno));
+		}
+	}
+
+	exit(EX_OK);
+}
diff --git a/dev/c/src/fork/Makefile b/dev/c/src/fork/Makefile
new file mode 100644
index 0000000..a737794
--- /dev/null
+++ b/dev/c/src/fork/Makefile
@@ -0,0 +1,11 @@
+
+progs=fork fork_exec
+all: $(progs)
+
+fork: fork.c
+
+fork_exec: fork_exec.c
+
+
+clean:
+	rm $(progs)
diff --git a/dev/c/src/fork/fork.c b/dev/c/src/fork/fork.c
new file mode 100644
index 0000000..25e4909
--- /dev/null
+++ b/dev/c/src/fork/fork.c
@@ -0,0 +1,38 @@
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+
+int main(){ 
+
+	pid_t cpid,ppid;
+	char errbuf[1024];
+
+	cpid = fork();
+	if (cpid == -1) {
+		(void) snprintf(errbuf, sizeof(errbuf),
+				"fork: %s", strerror(errno));
+		printf("%s\n", errbuf);
+		exit(1);
+	}
+
+	if (cpid == 0) {	
+		//child
+		ppid = getppid();
+		if(ppid == 1){
+			printf("parent died ?\n");
+			_exit(1);
+		}
+		printf("I'm child with  %i, parent %i\n", getpid(), ppid);
+		_exit(0);
+	}
+/* parent */
+	wait(NULL);
+	printf("Child id: %i\n", cpid);
+	return 0;
+}
+
diff --git a/dev/c/src/fork/fork_exec.c b/dev/c/src/fork/fork_exec.c
new file mode 100644
index 0000000..7f87c84
--- /dev/null
+++ b/dev/c/src/fork/fork_exec.c
@@ -0,0 +1,40 @@
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+
+int main(){ 
+
+	pid_t cpid,ppid;
+	char errbuf[1024];
+
+	char *prog = "vim";
+	char *const args[3]= {"vim", "fork_exec.c", NULL};
+
+	cpid = fork();
+	if (cpid == -1) {
+		(void) snprintf(errbuf, sizeof(errbuf),
+				"fork: %s", strerror(errno));
+		printf("%s\n", errbuf);
+		exit(1);
+	}
+
+	if (cpid == 0) {	
+		//child
+		ppid = getppid();
+		if(ppid == 1){
+			printf("parent died ?\n");
+			_exit(1);
+		}
+		execvp(prog, args);
+		_exit(0);
+	}
+/* parent */
+	wait(NULL);
+	printf("Child id: %i\n", cpid);
+	return 0;
+}
+
diff --git a/dev/c/src/hello/Makefile b/dev/c/src/hello/Makefile
index a6d9f07..2c0ff2d 100644
--- a/dev/c/src/hello/Makefile
+++ b/dev/c/src/hello/Makefile
@@ -1,7 +1,6 @@
-CC=gcc
 CFLAGS=-Wall
 
-hello: hello.o
+hello: hello.c
 
 clean:
 	rm -f *.o hello
diff --git a/dev/c/src/hello/hello.c b/dev/c/src/hello/hello.c
index df66493..092efa5 100644
--- a/dev/c/src/hello/hello.c
+++ b/dev/c/src/hello/hello.c
@@ -1,6 +1,10 @@
 #include <stdio.h>
+#include <unistd.h>
 
 int main() {
-    printf("hello World!");
+	char *name;
+	name = getlogin();
+
+    printf("hello %s!\n", name);
     return 0;
 }
diff --git a/dev/c/src/linux/Makefile b/dev/c/src/linux/Makefile
new file mode 100644
index 0000000..e026551
--- /dev/null
+++ b/dev/c/src/linux/Makefile
@@ -0,0 +1,13 @@
+CC=gcc
+CFLAGS=-Wall -static
+#LDFLAGS=-lc -lnss_files -lnss_dns -lresolv
+
+all: init ramdisk
+
+init: init.c
+
+ramdisk:
+	find . | cpio -o -H newc | gzip > rootfs.cpio.gz
+
+clean:
+	rm -f *.o init rootfs.cpio.gz
diff --git a/dev/c/src/linux/init.c b/dev/c/src/linux/init.c
new file mode 100644
index 0000000..10af0be
--- /dev/null
+++ b/dev/c/src/linux/init.c
@@ -0,0 +1,8 @@
+#include <stdio.h>
+#include <unistd.h>
+
+int main() {
+    printf("FOOBAR FOOBAR FOOBAR FOOBAR FOOBAR FOOBAR FOOBAR\n");
+    sleep(0xFFFFFFFF);
+    return 0;
+}
diff --git a/dev/c/src/linux/rungdb.sh b/dev/c/src/linux/rungdb.sh
new file mode 100644
index 0000000..9408d7f
--- /dev/null
+++ b/dev/c/src/linux/rungdb.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+gdb \
+    -ex "add-auto-load-safe-path $(pwd)" \
+    -ex "file vmlinux" \
+    -ex 'set arch i386:x86-64:intel' \
+    -ex 'target remote localhost:1234' \
+    -ex 'hbreak start_kernel' \
+    -ex 'continue' \
+    -ex 'disconnect' \
+    -ex 'set arch i386:x86-64' \
+    -ex 'target remote localhost:1234'