27 lines
1.1 KiB
Bash
27 lines
1.1 KiB
Bash
#! /bin/bash
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# If possible use the KDE program kdialog
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# otherwise fall back to the generic X program xmessage.
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# The "..." quotation when calling 'test -x' is crucial
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# because calling 'test -x' without explicite empty argument
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# (when 'type -p kdialog' fails) would result true.
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if test -x "$( type -p kdialog )"
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then PopupProgram='kdialog --error'
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else PopupProgram='xmessage'
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fi
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# If hp-toolbox cannot access a hplip device
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# then it doesn't show up on the X window system.
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# It only shows an 'ERROR...' or 'error...' message on stderr
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# but exits nevertheless with zero exit code.
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# Note that one cannot grep for '^error' because there are leading
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# escape codes (e.g. "esc [ 3 1 ; 0 1 m") in the output lines.
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# The "..." quotation when calling 'test -x' is crucial
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# because calling 'test -x' without explicite empty argument
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# (when 'type -p hp-toolbox' fails) would result true.
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if test -x "$( type -p hp-toolbox )"
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then hp-toolbox 2>&1 1>/dev/null | grep -q -i 'error' && $PopupProgram 'No HP all-in-one device found (those devices require a special setup).'
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else $PopupProgram 'Cannot execute hp-toolbox.'
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fi
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