create the "bash-c" program, so as to make it easy to

write self-executing scripts

1 files changed, 36 insertions, 0 deletions

diff --git a/tools/bash-c.c b/tools/bash-c.c
new file mode 100644
index 0000000..6b2844d
--- /dev/null
+++ b/tools/bash-c.c
@@ -0,0 +1,36 @@
+//////////////
+
+using namespace std;
+#include <iostream>
+#include <string>
+#include <unistd.h>
+#include <sys/types.h>
+#include <stdio.h>              /* for perror() */
+#include <stdlib.h>             /* for exit() */
+
+
+string dirname(const string path){
+  size_t where = path.rfind("/");
+  if (where == string::npos) return ".";
+  return path.substr(0, where);
+}
+
+int main(int argc, char** argv){
+  int verbosity(0);
+  
+  char* nargv[1+argc];
+  for (int ii = 1; ii <= argc; ii++){
+    if (verbosity) {
+      if (argv[ii] == 0) cout << "zero" << endl;
+      else cout << "[" << argv[ii] << "]" << endl;
+    }
+    nargv[1+ii] = argv[ii];
+  }
+  nargv[1] = (char*)"-c";
+  nargv[0] = (char*)"/home/jsd/bin/ECHO";
+  nargv[0] = (char*)"/bin/bash";
+
+  execv(*nargv, nargv);
+  cerr << "bash-c: exec failed for '" << *nargv << "' : ";
+  perror(0);
+}