Re: [Help-bash] backgrounding a process sends it into a tailspin

[Dan Douglas]

Here is the same script with various issues corrected:

#!/usr/bin/env bash

logger()
    if [[ -x $IMG_TRACK ]]; then 
        "$IMG_TRACK" "$1" gnuplot-4.4.3 "$BASH_SOURCE" "$@"
    fi

IMG_TRACK=${IMG_TRACK:-/usr/local/tools/imgtrack-1.0/bin/imgtrack}
trap 'logger END' EXIT
logger BEGIN
/usr/local/tools/gnuplot-4.4.3/bin/gnuplot.real "$@"

--

These are very unlikely the source of the problem.

Another unlikely possibility: I don't know what gnuplot does with stdin, but 
there are a couple bash-specific quirks involving background jobs reading from 
stdin. You might try adding a redirect to the line that runs gnuplot, i.e.

.../gnuplot.real "$@" </dev/null

It would also be helpful to know what OS is being used, and on what arch.

-- 
Dan Douglas

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