On 06/07/2014 07:17 PM, ToddAndMargo wrote:
> On 06/07/2014 06:00 PM, zxq9 wrote:
>> On Saturday 07 June 2014 17:38:35 you wrote:
>>> Hi All,
>>>
>>> Bash: I am trying to use a variable to hold
>>> a log and add to it as I go.  I can do this
>>> with a temp file, but I'd rather do it with
>>> a variable.
>>>
>>> I have gotten this far:
>>>
>>> A=$(echo -e  "abc\n")
>>> A="$A"$(echo -e  "def\n")
>>> A="$A"$(echo -e  "ghi\n")
>>>
>>> echo $A
>>> abcdefghi
>>>
>>> echo -e $A
>>> abcdefghi
>>>
>>> What am I doing wrong?  Is it better to just break
>>> down and just use a file?
>>
>> The assignment doesn't need echo, and the series of "echo -e" is
>> swallowing
>> the newlines you expected to have in place.
>>
>> Here's an example:
>>
>> -----------------
>> ceverett@jalapeno ~/Code/bash $ cat var-log.bash
>> #! /bin/bash
>> a="start of log"
>> for newdata in $(seq 1 10)
>> do
>>    a="$a\n$newdata"
>> done
>> echo -e "$a"
>>
>> ceverett@jalapeno ~/Code/bash $ ./var-log.bash
>> start of log
>> 1
>> 2
>> 3
>> 4
>> 5
>> 6
>> 7
>> 8
>> 9
>> 10
>> -----------------
>>
>> But really, you shouldn't store a log in a variable, especially if it
>> might
>> receive a lot of traffic (and especially since you lose everything in the
>> event of a program interruption of any sort, which defeats the
>> purpose). You
>> could accumulate a bit of data in a variable, but you should always
>> flush it
>> to a file. The append redirect operator was designed specifically to
>> make this
>> easy; not using it is going against the grain.
>>
>
> Hi zxq9,
>
>     I see what I did wrong.  Thank you!
>
>     It is a small log.  Only about 20 line
> of text in it.
>
> -T
>
>


Hi Guys,

Thank you for the help.  If you are curious, this is
what became of all the bash syntax questions.

-T


DownloadApp () {
    # $1 Application Name
    # RtnState: 0 = unknown (default)
    #           1 = no update found
    #           2 = update found
    #           3 = error

    App=$1
    Status=0
    Col_Grey="\x1b[30;01m"
    Col_Red="\x1b[31;01m"
    Col_Blue="\x1b[38;49;00m"
    Col_Reset="\x1b[39;49;00m"

    AppDot="${App}:                          "; AppDot="${AppDot:0:30}"


    eval "$App"; RtnState=$?
    if [ "$RtnState" == "3" ]; then MasterStatus=1; fi

    case $RtnState in
       "1" )
            StatusLog="${StatusLog}\n${AppDot} ${Col_Grey}no new 
updates${Col_Reset}"
            ;;

       "2" )
            StatusLog="${StatusLog}\n${AppDot} ${Col_Blue}new update 
downloaded${Col_Reset}"
            ;;

       "3" )
            StatusLog="${StatusLog}\n${AppDot} ${Col_Red}ERROR.  See 
details above${Col_Reset}"
            MasterStatus="1"
            ;;

       *)
            StatusLog="${StatusLog}\n${AppDot} ${Col_Red}did not return 
a recognized status <{$RtnState}>${Col_Reset}"
    esac

    tput sgr0 # Reset text attributes to normal without clear
}