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Top Forums Shell Programming and Scripting First bash script for Raspberry pi Post 302996060 by RudiC on Tuesday 18th of April 2017 10:27:20 AM
Old 04-18-2017
Not sure I understand your logics. Please be aware that read is a bash builtin (command) and should not be used as a variable nor compared to anything like you do in above. You can use its exit code, though.
Did you consider the grep command?
 

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xprehashprinterlist(1x) 												   xprehashprinterlist(1x)

NAME
xprehashprinterlist - Recomputes the list of available printers. SYNOPSIS
xprehashprinterlist [-v] [-h] DESCRIPTION
xprehashprinterlist causes all Xprint servers to recompute (update) their lists of available printers, and update the attributes for the printers. The intended usage of this tool is that a system administrator can run it after changing the printer topology. OPTIONS
-v generate verbose output -h | -? print usage ENVIRONMENT
XPSERVERLIST ${XPSERVERLIST} must be set, identifying the available Xprint servers. See Xprint(7) for more details. EXAMPLES
Update the list of available printers % xprehashprinterlist -v would print: Rehashing printer list on server 'meridian:34' NOTES
xprehashprinterlist rehashes all printer lists of all print servers. Alternatively xset rehashprinterlist may be used to rehash only the list of printers in one print server. SEE ALSO
Xprint(7), X11(7), xset(1x), xplsprinters(1x), xphelloworld(1x), xpxmhelloworld(1x), xpawhelloworld(1x), xpxthelloworld(1x), xpsimplehel- loworld(1x), Xserver(1x), Xprt(1x), libXp(3x), libXprintUtils(3x), libXprintAppUtils(3x), XmPrintShell(3x), XawPrintShell(3x), Xprint FAQ (http://xprint.mozdev.org/docs/Xprint_FAQ.html), Xprint main site (http://xprint.mozdev.org/) 8 October 2004 xprehashprinterlist(1x)
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