Re: Logging of commands in a bash script to a file
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On 04/23/2014 05:34 AM, Daniel Bareiro wrote:
> Hi, Ty.
>
> On Tuesday, 22 April 2014 22:34:29 -0700,
> ty wrote:
>
>> Perhaps this will work?
>> #!/bin/bash
>> echo 1 #Non Logged Commands
>> echo 2
>> echo 3
>> echo 4
>> (
>> set -x
>> echo 5 #Logged Commands
>> echo 6
>> echo 7
>> echo 8
>> ) 2>> log
>> echo 9 #Non Logged Commands
>> echo 10
>>
>> Output of terminal:
>> 1
>> 2
>> 3
>> 4
>> 5
>> 6
>> 7
>> 8
>> 9
>> 10
>>
>> Output of log:
>> ++ echo 5
>> ++ echo 6
>> ++ echo 7
>> ++ echo 8
>
> This seems to be what I need. Although in some parts of the script, I am
> getting an "ambiguous redirect".
2> log means redirect (>) errors (2) to log
A ambiguous redirect sounds like the variable is empty.
To demonstrate:
a=" "
echo hello > $a
bash: $a: ambiguous redirect
Make sure ${VPN_APP_LOG[$N]}is not being set inside the sub-proccess ( )
and is a valid variable.
>
>
>
> 87 ### Add routes ###
> 88 $ECHO "Applying rules for simultaneous routing..."
> 89 (
> 90 set -x
> 91 $IP route add ${VPN_NET[$N]} dev ${VPN_IFACE[$N]} src
${VPN_IP[$N]} table $N
> 92 $IP route add default via ${VPN_GW[$N]} table $N
> 93
> 94 $IP route add ${VPN_NET[$N]} dev ${VPN_IFACE[$N]} src
${VPN_IP[$N]}
> 95
> 96 $IP rule add from ${VPN_IP[$N]} table $N
> 97 ) 2>> ${VPN_APP_LOG[$N]}
> 98 $ECHO
=============================================================================
> 99 ### Add routes ###
> 100 done
> 101
> 102 ### We make balancing between the two VPNs ###
> 103 $ECHO "Applying rules for balancing..."
> 104
> 105 $ECHO "We removed the default route on the server..."
> 106 (
> 107 set -x
> 108 $IP route del default via 162.252.86.177
> 109 ) 2>> ${VPN_APP_LOG[$N]}
> 110 $ECHO "...and we distribute outbound traffic between the two
VPNs..."
> 111 (
> 112 set -x
> 113 $IP route add default scope global \
> 114 nexthop via ${VPN_IP[1]} dev ${VPN_IFACE[1]}
weight 1 \
> 115 nexthop via ${VPN_IP[2]} dev ${VPN_IFACE[2]} weight 1
> 116 ) 2>> ${VPN_APP_LOG[$N]}
> 117 ### We make balancing between the two VPNs ###
> 118 fi
>
> For example, I am getting this error on line 118, but previous run
> smoothly.
>
>
> Thanks for responding.
>
>
> Regards,
> Daniel
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