ugly_kill2.sh

#!/bin/sh

tmpdir=`mktemp -d`;
[ $? -eq 0 ] || exit 1;
cat >$tmpdir/file.c <<EOF
#include <sys/types.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
int main(int argc, char * argv[]){
    if (argc <= 1){
	printf("missing pid argument\\n");
	return 1;
    }
    int pid = atoi(argv[1]);
    printf("killing process: %d\\n", pid);
    int ret = kill(pid, SIGTERM);
    return ret;
}
EOF

gcc $tmpdir/file.c -o $tmpdir/notkill
$tmpdir/notkill $1

ret=$?

! [ -z "$tmpdir" ] && [ -d "$tmpdir" ] && rm -rf $tmpdir
exit $ret

analog to https://gist.github.com/kakwa/23eef5f44017be15b4f8 (but somewhat readable)