Bash function collections

buildlogcmd.sh

function buildlogcmd {
    log=$1
    shift
    echo "Build: $*" >> "$log"
    echo "    `pwd`" >> "$log"
    echo "    `date`" >> "$log"
    echo "" >> "$log"
    $* 2>&1 | tee -a "$log"
    status=${PIPESTATUS[0]}
    if [ $status != 0 ]; then
        echo "" >> "$log"
        echo "FAILED" >> "$log"
        echo ""
        echo "FAILED"
        exit $status
    fi
    echo "" >> "$log"
    echo "OK" >> "$log"
}

check_connection.sh

# check the network connection
function check_connection() {
    touch ignore.me
    scp -o ConnectTimeout=10 ignore.me ${REMOTE_USER}@${REMOTE_HOST}:${REMOTE_FOLDER}

    # if scp doesn't work, then send error email to let someone know.
    if [ $? != 0 ]; then
        sendemail -f ${FROM_ADDR} -t ${TO_USERS} -u "FATAL ERROR: Can't connect to ${REMOTE_USER}@${REMOTE_HOST} from ${host}" -m "Please have a check and run backup scripts again!!!" -s ${SMTP_SERVER}
        exit 1
    fi
}

trap.sh

# set trap to clean environment
function clean_env() {
    rm -f ${TARFILE}
    rm -f ${TARFILE}.md5sum
    rm -f ${LOGFILE}
}
trap clean_env EXIT SIGINT SIGTERM