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Full Discussion: Running options in bash script
Top Forums Shell Programming and Scripting Running options in bash script Post 303011028 by Don Cragun on Friday 12th of January 2018 02:58:34 AM
Old 01-12-2018
Why aren't you using getopts? Having consistent methods of parsing options greatly contributes to the ability of users unfamiliar with your code automatically know how to get a quick view of the syntax of your utility (with something like: utility -?), the ability to specify options separately or combined and in any order:
Code:
utility -Rq
utility -qR
utility -R -q
utility -q -R

should all produce the same results. And, you should have a built-in help/usage message if an unknown option is found. Instead, your code silently ignores unknown options (leading users to believe that the options they provided were correct when, instead, nothing will be done by your code).

You generally want to set flags while processing options, not run the functions that the options indicate should be run (after you have determined all of hte options that are present).

Your code seems to indicate that the -R option in your utility must always be present. Why have an option if it is always required to be set?
This User Gave Thanks to Don Cragun For This Post:
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LEARN ABOUT DEBIAN

hobbitcgi.cfg

HOBBITCGI.CFG(5)						File Formats Manual						  HOBBITCGI.CFG(5)

NAME

       hobbitcgi.cfg - Command-line parameters for the Xymon CGI tools

SYNOPSIS

       $BBHOME/etc/hobbitcgi.cfg

DESCRIPTION

       hobbitcgi.cfg(1) controls the commandline options passed to all of the Xymon CGI tools through their respective shell-script wrappers. Typ-
       ically the options listed here are used for system-wide configuration of the CGI utilities, e.g. to define where  they  read  configuration
       files.

       The exact set of commandline options available are described in the man-page for each of the CGI utilities.

       The file is "sourced" into the shell script wrapper, so assignments to the CGI-specific variables must follow standard shell-script syntax.

SETTINGS

       CGI_ACKINFO_OPTS
	      Options for the hobbit-ackinfo.cgi(1) utility.

       CGI_ACK_OPTS
	      Options for the bb-ack.cgi(1) utility.

       CGI_CSVINFO_OPTS
	      Options for the bb-csvinfo.cgi(1) utility.

       CGI_DATEPAGE_OPTS
	      Options for the bb-datepage.cgi(1) utility.

       CGI_ENADIS_OPTS
	      Options for the hobbit-enadis.cgi(8) utility.

       CGI_EVENTLOG_OPTS
	      Options for the bb-eventlog.cgi(1) utility.

       CGI_FINDHOST_OPTS
	      Options for the bb-findhost.cgi(1) utility.

       CGI_HIST_OPTS
	      Options for the bb-hist.cgi(1) utility.

       CGI_HOBBITCOLUMN_OPTS
	      Xymon-specific  options for column documentation. This uses the bb-csvinfo.cgi(1) utility with the server/etc/columndoc.cfg configu-
	      ration file.

       CGI_HOBBITCONFREPORT_OPTS
	      Options for the hobbit-confreport.cgi(1) utility.

       CGI_HOBBITGRAPH_OPTS
	      Options for the hobbitgraph.cgi(1) utility.

       CGI_HOSTGRAPHS_OPTS
	      Options for the hobbit-hostgraphs.cgi(1) utility.

       CGI_NKEDIT_OPTS
	      Options for the hobbit-nkedit.cgi(1) utility.

       CGI_NKVIEW_OPTS
	      Options for the hobbit-nkview.cgi(1) utility.

       CGI_REPLOG_OPTS
	      Options for the bb-replog.cgi(1) utility.

       CGI_REP_OPTS
	      Options for the bb-rep.cgi(1) utility.

       CGI_SNAPSHOT_OPTS
	      Options for the bb-snapshot.cgi(1) utility.

       CGI_SVCHIST_OPTS
	      Options for the hobbitsvc.cgi(1) utility when used to view historical logs. Note that the "--historical" option must be included	in
	      this setting.

       CGI_SVC_OPTS
	      Options for the hobbitsvc.cgi(1) utility.

SEE ALSO

       xymon(7), the individual CGI utility man-pages.

Xymon							    Version 4.2.3:  4 Feb 2009						  HOBBITCGI.CFG(5)
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