I am writing a shell script to monitor website live or not and send an email alert below is my code
#!/bin/bash if [[ curl -s --head --request GET | grep "200 OK" > /dev/null] && [ curl -s --head --request GET | grep "200 OK" > /dev/null ]] then echo "The HTTP server on opx.com and oss.com is up!" #> /dev/null else msg="The HTTP server opx.com Or oss.com is down " email="" curl --data "body=$msg &to=$email &subject=$msg" fi; if i run this code i got
./Monitoring_Opx_Oss: line 2: conditional binary operator expected ./Monitoring_Opx_Oss: line 2: syntax error near `-s' ./Monitoring_Opx_Oss: line 2: `if [[ curl -s --head --request GET | grep "200 OK" > /dev/null] && [ curl -s --head --request GET | grep "200 OK" > /dev/null ]] ' Please correct me...
1 Answer
Change it do this:
if [ $(curl -s --head --request GET | grep "200 OK" > /dev/null) ] && [ $(curl -s --head --request GET | grep "200 OK" > /dev/null) ] To check the status of a command inside an if, you have to do it like
if [ $(command) ] while you were using
if [ command] note also the need of spaces around [ ]: if [_space_ command _space_ ]
Update
Based on Ansgar Wiechers's comment, you can also use the following:
if curl -s --head --request GET | grep "200 OK" > /dev/null && curl -s --head --request GET | grep "200 OK" > /dev/null; That is,
if command && command 
