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List:       linuxap-dev
Subject:    Re: [LinuxAP-dev] Re: http scripts
From:       "Glenn Engel at Home" <glenne () engel ! org>
Date:       2003-01-10 16:38:38
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Note that you can use the shell substitution syntax to do this if items
are delimited by a character not contained within one of the arguments.

${list#* }  #remove thru first space

repeat the above n times and then remove trailing items with
${list%% *}

Make this a function and no sub-shells needed either.

Keith E Smith said:
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> Keith E Smith wrote:
> | |> # cat /usr/bin/expr
> | | #!/bin/ash
> | | if [ -z "$3" ]
> | | then
> | |   echo "Usage: $0 number oper number"
> | |   exit 1
> | | fi
> | | dc "$1" "$3" "$2" | cut -d"." -f1
> | |
> | | Cheers
> |
> | so 1 + 1 comes in.  The quotes are irrelevant, we end up with:
> |
> | dc 1 1 + | cut -d"." -f1
> |
> | [keith@tempe] /home/keith<313>ash
> | $ dc 1 1 + | cut -d"." -f1
> | Could not open file 1: No such file or directory
> |
> | Perhaps something I missed, don't see where you are popping the stack
>
> Not to be obnoxious but I've used dc in the past, switch to expr for
> capability reasons looong ago:
>
> echo "$1" "$3" "$2" p | dc works.
>
> What's with the 'cut'?  Is there a busybox'ism going down here?
>
> - --
> Keith Smith                 keith@ksmith.com
> 655 W Fremont Dr
> Tempe AZ 85282              it's hot
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--
Glenn




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