[SalesForce] execute anonymous apex via ANT script

download the salesforce ant tool and extract it to /lib/salesforce_ant_34.0/

then download the missing link http library and extract it to /lib/ml-ant-http-1.1.3/

scaffold out your build.xml as follows, and look at the deploy target for example usage

 <project default="usage" basedir="." xmlns:sf="antlib:com.salesforce" xmlns:ml="org.missinglink.ant.task.http.HttpClientTask">

     <!-- Download from https://login.salesforce.com/dwnld/SfdcAnt/salesforce_ant_32.0.zip -->
     <taskdef uri="antlib:com.salesforce" classpath="lib/salesforce_ant_32.0/ant-salesforce.jar" />

     <!-- Download from https://code.google.com/p/missing-link/ -->
     <taskdef name="http" uri="org.missinglink.ant.task.http.HttpClientTask" classname="org.missinglink.ant.task.http.HttpClientTask" classpath="lib/ml-ant-http-1.1.3/ml-ant-http-1.1.3.jar"/>

     <property file="build.properties"/>
     <property environment="env"/>

     <target name="deploy" description="Deploys all package components to dev org">
         <!-- stop scheduled job -->
         <executeAnonymous username="${de.username}" password="${de.password}" serverurl="${de.serverurl}"><![CDATA[
             for (SObject j : [SELECT Id FROM CronTrigger]) System.abortJob(j.Id);
         ]]></executeAnonymous>

         <!-- upload code -->
         <sf:deploy
             username="${de.username}"
             password="${de.password}"
             serverurl="https://login.salesforce.com"
             deployRoot="src"
         />

         <!-- restart scheduled job -->
         <executeAnonymous username="${de.username}" password="${de.password}" serverurl="${de.serverurl}"><![CDATA[
             System.schedule('New Job', '0 0 * * * ?', new Job());
         ]]></executeAnonymous>
     </target>

     <macrodef name="executeAnonymous" description="Invoke ExecuteAnonymous using Salesforce Tooling API">
         <attribute name="username" description="Salesforce user name."/>
         <attribute name="password" description="Salesforce password."/>
         <attribute name="serverurl" description="Salesforce endpoint."/>
         <text name="apexcode"/>
         <sequential>
             <!-- Login to populate serverUrl / sessionId / instance -->
             <login username="@{username}" password="@{password}" serverurl="@{serverurl}" />

             <!-- Execute using HTTP GET -->
             <ml:http url="${instance}/services/data/v34.0/tooling/executeAnonymous" method="GET" outfile="lib/executeAnonymousResult.json"  statusProperty="loginResponseStatus">
                 <headers>
                     <header name="Authorization" value="Bearer ${sessionId}"/>
                 </headers>
                 <query>
                     <parameter name="anonymousBody" value="@{apexcode}"/>
                 </query>
             </ml:http>

             <!-- Fail on error -->
             <loadfile property="executeAnonymousResult" srcFile="lib/executeAnonymousResult.json" />
             <fail message="Execute Anonymous failed: ${executeAnonymousResult}">
                 <condition>
                     <resourcecontains resource="lib/executeAnonymousResult.json" substring="&quot;success&quot;:false" />
                 </condition>
             </fail>

             <!-- Show output -->
             <echo message="${executeAnonymousResult}" />
         </sequential>
     </macrodef>

     <macrodef name="login" description="Login to salesforce and populate serverUrl / sessionId / instance">
         <attribute name="username" description="Salesforce user name."/>
         <attribute name="password" description="Salesforce password."/>    
         <attribute name="serverurl" description="Salesforce endpoint."/>    
         <sequential>
             <!-- Obtain Session Id via Login SOAP service -->
             <ml:http url="@{serverurl}/services/Soap/c/34.0" method="POST" failonunexpected="false" outfile="lib/loginResult.xml" statusProperty="loginResponseStatus">
                 <headers>
                     <header name="Content-Type" value="text/xml"/>
                     <header name="SOAPAction" value="login"/>
                 </headers>
                 <entity><![CDATA[
                     <env:Envelope xmlns:xsd='http://www.w3.org/2001/XMLSchema' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:env='http://schemas.xmlsoap.org/soap/envelope/'>
                         <env:Body>
                             <sf:login xmlns:sf='urn:enterprise.soap.sforce.com'>
                                 <sf:username>@{username}</sf:username>
                                 <sf:password>@{password}</sf:password>
                             </sf:login>
                         </env:Body>
                     </env:Envelope>]]>
                 </entity>
             </ml:http>

             <!-- Fail on error -->
             <loadfile property="loginResult" srcFile="lib/loginResult.xml" />
             <fail message="Login failed: ${loginResult}">
                 <condition>
                     <resourcecontains resource="lib/loginResult.xml" substring="faultcode" />
                 </condition>
             </fail>

             <!-- Parse response into properties -->
             <xmlproperty file="lib/loginResult.xml" />
             <echo file="lib/serverUrl.txt" message="${soapenv:Envelope.soapenv:Body.loginResponse.result.serverUrl}" />
             <echo file="lib/sessionId.txt" message="${soapenv:Envelope.soapenv:Body.loginResponse.result.sessionId}" />
             <echo file="lib/instance.txt" message="${soapenv:Envelope.soapenv:Body.loginResponse.result.serverUrl}" />
             <replaceregexp file="lib/instance.txt" match="(https://[^/]+)/.*" replace="\1" />
             <loadfile property="sessionId" srcFile="lib/sessionId.txt" />
             <loadfile property="instance" srcFile="lib/instance.txt" />
         </sequential>
     </macrodef>

 </project>