Jenkins post commit hook. Allows building for multiple folders and support for parameters. If you don't require any parameters for the Jenkins build then just leave an empty string in the `JOBS_PARAMETERS` array.

post-commit.sh

#!/bin/bash

REPOS="$1"
REV="$2"

urlencode () {
        tab="`echo -en "\x9"`"
        local i="$@"
        i=${i//%/%25}  ; i=${i//' '/%20} ; i=${i//$tab/%09}
        i=${i//!/%21}  ; i=${i//\"/%22}  ; i=${i//#/%23}
        i=${i//\$/%24} ; i=${i//\&/%26}  ; i=${i//\'/%27}
        i=${i//(/%28}  ; i=${i//)/%29}   ; i=${i//\*/%2a}
        i=${i//+/%2b}  ; i=${i//,/%2c}   ; i=${i//-/%2d}
        i=${i//\./%2e} ; i=${i//\//%2f}  ; i=${i//:/%3a}
        i=${i//;/%3b}  ; i=${i//</%3c}   ; i=${i//=/%3d}
        i=${i//>/%3e}  ; i=${i//\?/%3f}  ; i=${i//@/%40}
        i=${i//\[/%5b} ; i=${i//\\/%5c}  ; i=${i//\]/%5d}
        i=${i//\^/%5e} ; i=${i//_/%5f}   ; i=${i//\`/%60}
        i=${i//\{/%7b} ; i=${i//|/%7c}   ; i=${i//\}/%7d}
        i=${i//\~/%7e}
        echo "$i"
}

JENKINS_CREDENTIALS="svn:svn@"
JENKINS_SERVER="http://${JENKINS_CREDENTIALS}jenkins.mycompany.com"

# Jobs names in Jenkins
JOBS_NAMES=("MyJenkinsJobName" "MyOtherJobWithNoParameters")
# Relative directory to watch from your repository 
JOBS_COMMIT_DIRS=("myproject/trunk" "myotherproject/branch/test_123")
# Parameters to pass into the Jenkins build, leave a blank string for none
JOBS_PARAMETERS=("MY_PARAM=123" "")
# Token required to authorize the build, leave blank if none required
JOBS_AUTH_TOKENS=("" "")
# Reason for the build
BUILD_REASON=$(urlencode "Post-commit hook for revision: ${REV}")

# Iterate over the Jenkins jobs
for ((i=0; i < ${#JOBS_NAMES[@]}; i++)); do
    # Check if changes were made to the watched repository folder for the revision 
    if svnlook dirs-changed -r $REV $REPOS | grep -qEe "^${JOBS_COMMIT_DIRS[$i]}"; then
        if [ -z "${JOBS_PARAMETERS[$i]}" ]
        then
            # Perform a build without any parameters
            /usr/bin/curl -X POST "${JENKINS_SERVER}/job/${JOBS_NAMES[$i]}/build?token=${JOBS_AUTH_TOKENS[$i]}&cause=${BUILD_REASON}"
        else
            # Perform a parameterized build
            /usr/bin/curl --data "${JOBS_PARAMETERS[$i]}" "${JENKINS_SERVER}/job/${JOBS_NAMES[$i]}/buildWithParameters?token=${JOBS_AUTH_TOKENS[$i]}&cause=${BUILD_REASON}"
        fi
    fi
done