Just built a workaround...using a dummy exec with no args, but setting both the executable and the args via de proper header prior to endpoint invocation, that way I finally DO GET the correct output headers, with the flexibility of a dynamic URL.
Spring DSL: <camel:setHeader headerName="CamelExecCommandExecutable"> <camel:simple>{{cmod.arsLoad}}</camel:simple> </camel:setHeader> <camel:setHeader headerName="CamelExecCommandArgs"> <camel:simple>-f -g ${in.header.appGroup} -h {{cmod.host}} -u {{cmod.username}} -p {{cmod.password}} {{tmp.path}}/${id}</camel:simple> </camel:setHeader> <camel:to uri="exec://dummy" /> <camel:to uri="log:org.apache.camel.example?showAll=true&multiline=true" /> <camel:log message="Error code: ${in.header.CamelExecExitValue}" /> Output / log example: [14/08/14 18:35:06:177 CLT] 0000007d SystemOut O 2014-08-14 18:35:06,177 ERROR [ExecProducer ] - The command ExecCommand [args=[-f, -g, FONDO, -h, 192.168.10.245, -u, admin, -p, password, /tmp/ID-thor-altiuz-cl-51959-1408055697500-0-1], executable=/opt/ibm/ondemand/V9.0/bin/arsload, timeout=9223372036854775807, outFile=null, workingDir=null, useStderrOnEmptyStdout=false] returned exit value 11 [14/08/14 18:35:06:179 CLT] 0000007d SystemOut O 2014-08-14 18:35:06,179 INFO [example ] - Exchange[ , Id: ID-thor-altiuz-cl-51959-1408055697500-0-7 , ExchangePattern: InOptionalOut , Properties: {CamelCorrelationId=ID-thor-altiuz-cl-51959-1408055697500-0-2, CamelCreatedTimestamp=Thu Aug 14 18:35:05 CLT 2014, CamelMessageHistory=[DefaultMessageHistory[routeId=route1, node=multicast1], DefaultMessageHistory[routeId=route1, node=to3], DefaultMessageHistory[routeId=route4, node=to6], DefaultMessageHistory[routeId=route4, node=setHeader3], DefaultMessageHistory[routeId=route4, node=doTry1], DefaultMessageHistory[routeId=route4, node=setHeader4], DefaultMessageHistory[routeId=route4, node=setHeader5], DefaultMessageHistory[routeId=route4, node=to7], DefaultMessageHistory[routeId=route4, node=to8]], CamelMulticastComplete=true, CamelMulticastIndex=2, CamelToEndpoint=log://org.apache.camel.example?multiline=true&showAll=true, isXalanTransformer=false, TryRouteBlock=true} , Headers: {appGroup=FONDO, breadcrumbId=ID-thor-altiuz-cl-51959-1408055697500-0-1, CamelExecExitValue=11, CamelExecStderr=null, CamelSpringWebserviceSoapHeader=javax.xml.transform.dom.DOMSource@492082f4} , BodyType: org.apache.camel.component.exec.ExecResult , Body: ARS1609W Specifying passwords on the command line is insecure due to the text being visible. See the Installation and Configuration Guide for your platform for information about the arsstash command or using Unified Login.ARS4315I Processing file >/tmp/ID-thor-altiuz-cl-51959-1408055697500-0-1<ARS1110E The application group >FONDO< does not exist or user >admin< does not have permission to access the application groupARS4318E Processing failed for file >/tmp/ID-thor-altiuz-cl-51959-1408055697500-0-1<Processing has stopped. The remaining files will NOT be processed. , Out: null: ] [14/08/14 18:35:06:179 CLT] 0000007d SystemOut O 2014-08-14 18:35:06,179 INFO [route4 ] - Error code: 11 -- View this message in context: http://camel.465427.n5.nabble.com/Exec-endpoint-not-working-correctly-with-recipientList-tp5755229p5755236.html Sent from the Camel - Users mailing list archive at Nabble.com.