Shell Programming and Scripting

// Notice ! and --posix added to lines 4 AND 10
// Also cleaned it up a bit...
#define SHELLSCRIPT1 "\
#!/bin/bash --posix\n \
echo \"hello\"\n \
"

// Not working
#define test1 "\
#!/bin/bash --posix\n \
array=(a1 a2 a3)\n \
echo ${array[*]}\n \
"

#include <iostream>
#include <cstdlib>
using namespace std;
int main ()
{
// working cout removed
system(SHELLSCRIPT1);

// works on macbook pro cout removed
system(test1);

return 0;
}

Last login: Sun Dec  1 19:44:37 on ttys000
AMIGA:barrywalker~> g++ test.cpp
AMIGA:barrywalker~> ./a.out
hello
a1 a2 a3
AMIGA:barrywalker~> _

mute@thedoctor:~/temp/frad$ ./makecode < script > code.cpp
mute@thedoctor:~/temp/frad$ g++ code.cpp
mute@thedoctor:~/temp/frad$ ./a.out
VAR0 = good
VAR1 = excellent
mute@thedoctor:~/temp/frad$ cat makecode
#!/bin/sh

cat << '__EOF__'
#include <iostream>
#include <cstdlib>
#include <unistd.h>
using namespace std;

#define SHELL "/bin/bash"

const char shellcode[] = {
"\
__EOF__

sed -e 's/"/\\"/g' -e 's/$/\\n\\/'

cat << '__EOF__'
"
};

int main() {
        return execl(SHELL, SHELL, "-c", shellcode, NULL);
}
__EOF__

"$"

\$