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test.sh:
    #!/bin/bash
    trap "" 0 1 2 3
    echo "test" >> $HOME/log.log
C:
int main()
{
  char aBuf[1024];
  sprintf(aBuf, "%s/test.sh", getenv("TESTSHELL"));
  printf(aBuf);
  printf("\n");
  int iRc = system(aBuf);
  return 0;
}
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sprintf(aBuf, ". %s/test.sh", getenv("TESTSHELL"));
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sprintf(aBuf, "bash %s/test.sh", getenv("TESTSHELL"));

try it

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