added Linux version for sysctl
added Linux version for sysctl

UncommonPleb/tldr,igorshubovych/tldr,slash3b/tldr,felixonmars/tldr,slash3b/tldr,felixonmars/tldr,katekyan/tldr,UncommonPleb/tldr,slash3b/tldr,zoisom/tldr,AgamAgarwal/tldr,kuanyui/tldr,Phizho/tldr,zoisom/tldr,deekim/tldr,cptdeka10/tldr,deekim/tldr,deekim/tldr,katekyan/tldr,igorshubovych/tldr,cptdeka10/tldr,kuanyui/tldr,WALL-E/tldr,Phizho/tldr,zoisom/tldr,mshmoustafa/tldr,AgamAgarwal/tldr,WALL-E/tldr,mshmoustafa/tldr,katekyan/tldr,cptdeka10/tldr,Phizho/tldr,UncommonPleb/tldr,felixonmars/tldr