{"id":7834,"date":"2019-06-12T13:39:38","date_gmt":"2019-06-12T05:39:38","guid":{"rendered":"http:\/\/rmohan.com\/?p=7834"},"modified":"2019-06-12T13:39:40","modified_gmt":"2019-06-12T05:39:40","slug":"check-if-host-is-a-live-bash-script","status":"publish","type":"post","link":"https:\/\/mohan.sg\/?p=7834","title":{"rendered":"Check if host is a live bash script"},"content":{"rendered":"\n
!\/bin\/bash
 #
 TCP-ping in bash (not tested)
 HOSTNAME=\"$1\"
 PORT=\"$2\"
 if [ \"X$HOSTNAME\" == \"X\" ]; then
    echo \"Specify a hostname\"
    exit 1
 fi
 if [ \"X$PORT\" == \"X\" ]; then
    PORT=\"22\"
 fi
 exec 3<>\/dev\/tcp\/$HOSTNAME\/$PORT
 if [ $? -eq 0 ]; then 
    echo \"Alive.\"
 else
    echo \"Dead.\"
 fi
 exec 3>&-<\/pre>\n","protected":false},"excerpt":{"rendered":"
 !\/bin\/bash # TCP-ping in bash (not tested) HOSTNAME=”$1″ PORT=”$2″ if [ “X$HOSTNAME” == “X” ]; then echo “Specify a hostname” exit 1 fi if [ “X$PORT” == “X” ]; then PORT=”22″ fi exec 3<>\/dev\/tcp\/$HOSTNAME\/$PORT if [ $? -eq 0 ]; then echo “Alive.” else echo “Dead.” fi exec 3>&- […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"_links":{"self":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/7834"}],"collection":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7834"}],"version-history":[{"count":1,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/7834\/revisions"}],"predecessor-version":[{"id":7836,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/7834\/revisions\/7836"}],"wp:attachment":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7834"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7834"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7834"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}