security: harden shell command execution against injection (1.2.x backport)#6902

TheWitness merged 6 commits intoCacti:1.2.xCacti/cacti:1.2.xfrom

somethingwithproof:backport/1.2.x-shell-injection-hardeningsomethingwithproof/cacti:backport/1.2.x-shell-injection-hardeningCopy head branch name to clipboard