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Full Discussion: Logical OR in shell script
Top Forums UNIX for Dummies Questions & Answers Logical OR in shell script Post 302923292 by figaro on Friday 31st of October 2014 07:13:45 PM
Old 10-31-2014
Logical OR in shell script
I have code as follows to perform some validations on C++ and Javascript files:
Code:
if [ "$ext" -eq "cpp" ] || [ "$ext" -eq "h" ] || [ "$ext" -eq "js" ]; then

However, when I want to add other extensions as well, say "py" or "sql", then the repeated OR starts to look contrived. I know I can use the -o operator to abbreviate the code a little bit, but isn't there a more terse way to perform checks like these? Perhaps a standard membership-of-array function?
Last edited by figaro; 10-31-2014 at 08:14 PM.. Reason: Replaced $# with $ext
 

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LEARN ABOUT REDHAT

xdpyinfo

XDPYINFO(1)						      General Commands Manual						       XDPYINFO(1)

NAME

       xdpyinfo - display information utility for X

SYNOPSIS

       xdpyinfo [-display displayname] [-queryExtensions] [-ext extension-name]

DESCRIPTION

       Xdpyinfo  is  a	utility  for displaying information about an X server.	It is used to examine the capabilities of a server, the predefined
       values for various parameters used in communicating between clients and the server, and the different types of screens and visuals that are
       available.

       By  default,  numeric  information  (opcode,  base  event, base error) about protocol extensions is not displayed.  This information can be
       obtained with the -queryExtensions option.  Use of this option on servers that dynamically load extensions will likely cause  all  possible
       extensions to be loaded, which can be slow and can consume significant server resources.

       Detailed  information  about  a particular extension is displayed with the -ext extensionName option.  If extensionName is all, information
       about all extensions supported by both xdpyinfo and the server is displayed.

ENVIRONMENT

       DISPLAY To get the default host, display number, and screen.

SEE ALSO

       X(7x), xwininfo(1), xprop(1), xrdb(1)

AUTHOR

       Jim Fulton, MIT X Consortium
       Support for the XFree86-VidModeExtension, XFree86-DGA, XFree86-Misc, and XKB extensions added by Joe Moss

X Version 11							    Release 6.6 						       XDPYINFO(1)
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