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  1. #1
    edilson
    Estou tentando usar este script para alteração de rotas e me da o seguinte erro bad interpreter: No such file or directory
    eis o script

    #!/bin/bash

    # author: Jesse Burkhardt
    # date: 2002/07/09

    # This shell script functions as a daemon to switch ip gateways
    # when the primary one loses connectivity. The failover is initiated
    # when by means of dead gateway detection (DTD) kludge - not kernel
    # based. Once the dead gateway is redetected as being alive primary
    # gateway (GW) will be restored.

    # Installation: This script should be invoked from the local startup
    # script, /etc/rc.local. Appended to this script should be the line:
    # ´/root/scripts/gw_failover.sh &´, insuring that this will start on
    # boot.

    # N.B. - Important testing note: Unplugging the eth0 cable is only a
    # partial test, simulating the ISP being down. Turning off the router
    # simulates both the router and the ISP being down.

    # Testing note: GW_1 is a router LAN interface; when it cannot be
    # reached the router is down. NEXTHOP_1 is the first IP reached at
    # ISP; when it cannot be reached the ISP is down. (Get the NEXTHOP
    # value by doing a traceroute to the router´s gateway interface
    # originating the trace from a connection other than the ISP´s.)

    # Logic matrix:

    # +---------+-----------+-----------+----------------+
    # ! current ! GW_1/NH_1 ! GW_2/NH_2 ! Action !
    # +---------+-----------+-----------+----------------+
    # 1 ! GW_1 ! up ! up ! nothing !
    # +---------+-----------+-----------+----------------+
    # 2 ! GW_1 ! down ! down ! nothing !
    # +---------+-----------+-----------+----------------+
    # 3 ! GW_1 ! down ! up ! switch to GW_2 !
    # +---------+-----------+-----------+----------------+
    # 4 ! GW_2 ! up ! up ! switch to GW_1 !
    # +---------+-----------+-----------+----------------+
    # 5 ! GW_2 ! down ! down ! nothing !
    # +---------+-----------+-----------+----------------+
    # 6 ! GW_2 ! down ! up ! switch to GW_1 !
    # +---------+-----------+-----------+----------------+

    # * GW_1/NH_1 ´up´ means that BOTH IPs are reachable.
    # GW_1/NH_1 ´down´ means that EITHER IP is unreachable.

    # Set our IP numbers as variables to help generalize this script
    # (GW is for GateWay and NH is for NextHop):

    # ISP_1 (Sprint):

    GW_1=192.168.0.1
    NH_1=192.168.0.2
    DEV_1=eth1

    # ISP_2 (Galaxy):

    GW_2=192.168.1.1
    NH_2=192.168.1.2
    DEV_2=eth2

    # log strings:

    LOG_STR_1=´gw_failover: Switching default GW to 192.168.1.1 - ifdown eth1´
    LOG_STR_2=´gw_failover: Switching default GW to 192.168.0.1 - ifup eth1´

    # mail strings:

    MAIL_TO=´edilson@tokstok.com.br operacao@tokstok.com.br´
    MAIL_SUBJECT_1=´Sprint 192.168.0.1/0 is down´
    MAIL_SUBJECT_2=´Sprint 192.168.0.0/0 is back up´
    MAIL_BODY_1=$LOG_STR_1
    MAIL_BODY_2=$LOG_STR_2

    # Need to initialize all interfaces and default GW if not already
    # done. This is to force a GW failure if necessary to fall into the
    # interface failover logic in the while loop.

    service network restart

    while [ 1 = 1 ]; do

    # Collect all matrix values.

    ping -c 1 $GW_1 | grep "100% packet loss"
    GW_PINGERROR_1=$?
    echo GW_PINGERROR_1 = $GW_PINGERROR_1

    ping -c 1 $NH_1 | grep "100% packet loss"
    NH_PINGERROR_1=$?
    echo NH_PINGERROR_1 = $NH_PINGERROR_1

    if [ $GW_PINGERROR_1 || $NH_PINGERROR_1 ];
    then
    PINGERROR_1 = 0
    else
    PINGERROR_1 = 1
    fi
    echo PINGERROR_1 = $PINGERROR_1

    ping -c 1 $GW_2 | grep "100% packet loss"
    GW_PINGERROR_2=$?
    echo GW_PINGERROR_2 = $GW_PINGERROR_2

    ping -c 1 $NH_2 | grep "100% packet loss"
    NH_PINGERROR_2=$?
    echo NH_PINGERROR_2 = $NH_PINGERROR_2

    if [ $GW_PINGERROR_2 || $NH_PINGERROR_2 ];
    then
    PINGERROR_2 = 0
    else
    PINGERROR_2 = 1
    fi
    echo PINGERROR_2 = $PINGERROR_2

    # Read as: "If both ISPs are not up or both ISPs are not both down ...
    # then look at switching GWs"

    if ! [ [ $PINGERROR_1 && $PINGERROR_2 ] || [ ! $PINGERROR_1 && ! $PINGERROR_2 ] ];
    then

    echo --> Primary ISP failure condition

    ip route list dev $DEV_2 | grep "default via $GW_2"
    GW_STATUS_2=$?
    echo
    echo GW_STATUS_2 = $GW_STATUS_2
    echo
    # Don´t change GW if it already has been.

    if [ $GW_STATUS_2 != 0 ];
    then
    echo $MAIL_BODY_1 | mail -s $MAIL_SUBJECT_1 $MAIL_TO
    echo
    echo `date`: $LOG_STR_1 >> /var/log/messages
    ip route replace default nexthop via $GW_2 dev $DEV_2
    ifdown $DEV_1
    fi

    else

    ip route list dev eth0 | grep "default via $GW_1"
    GW_STATUS_2=$?
    echo
    echo GW_STATUS_2 = $GW_STATUS_2
    # Don´t change GW if it already has been.

    if [ $GW_STATUS_2 != 0 ];
    then
    echo $MAIL_BODY_2 | mail -s $MAIL_SUBJECT_2 $MAIL_TO
    echo
    echo `date`: $LOG_STR_2 >> /var/log/messages
    ifup $DEV_1
    ip route replace default nexthop via $GW_1 dev $DEV_1

    fi

    fi

    sleep 5

    done




  2. #2
    paulogrifo
    ((
    Verifique se #!/bin/bash é a 1ª linha.
    Se for verifique se vc tem o (/bin/bash) instalado
    Ou substitua por (#!/bin/sh)
    Ou execute de forma diferente
    # sh /seu/script
    ))






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