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Full Discussion: Check if parameter passes in contains certain string
Top Forums Shell Programming and Scripting Check if parameter passes in contains certain string Post 62233 by jim mcnamara on Monday 14th of February 2005 11:07:25 AM
Old 02-14-2005
The shell also supports different kinds of string operators. The most nearly universal one is expr - in this case expr index

Try man expr.
Code:
let is_there=0
check ()
{
  if [ $is_there -gt 0 ] ; then
     echo "$str has a WA in it"
  else
     echo "$str has no WA in it"
  fi     	
}

str="/someplace/WA/01/"
is_there=`expr index $str "WA"`
check;

Test whether expr return zero or a non-zero result.
 

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LEARN ABOUT OPENSOLARIS

let

let(1)								   User Commands							    let(1)

NAME

       let - shell built-in function to evaluate one or more arithmetic expressions

SYNOPSIS

   ksh
       let arg...

   ksh93
       let [expr...]

DESCRIPTION

   ksh
       Each arg is a separate arithmetic expression to be evaluated.

   ksh93
       let  evaluates  each expr in the current shell environment as an arithmetic expression using ANSI C syntax. Variables names are shell vari-
       ables and they are recursively evaluated as arithmetic expressions to get numerical values. let has been made obsolete by the ((...))  syn-
       tax of ksh93(1) which does not require quoting of the operators to pass them as command arguments.

EXIT STATUS

   ksh
       ksh returns the following exit values:

       0    The value of the last expression is non-zero.

       1    The value of the last expression is zero.

   ksh93
       ksh93 returns the following exit values:

       0     The last expr evaluates to a non-zero value.

       >0    The last expr evaluates to 0 or an error occurred.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       ksh(1), ksh93(1), set(1), typeset(1), attributes(5)

SunOS 5.11							    2 Nov 2007								    let(1)
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