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Top Forums Shell Programming and Scripting Bad substitution error while working with substring Post 302825815 by smile689 on Tuesday 25th of June 2013 08:41:35 AM
Old 06-25-2013
Bad substitution error while working with substring

Hi I'm using ksh.
And i'm trying to get the substring like below.
but giving the following error
Code:
 
#!/bin/ksh
foo=teststring
bar=${foo:0:5}
echo $bar

And the error is
Code:
./sbstr_test.sh[4]: bar=${foo:0:5}: bad substitution

what is wrong in this script. Please correct me

---------- Post updated at 06:11 PM ---------- Previous update was at 05:21 PM ----------

Even i tried with the following but of no use

Code:
#!/bin/ksh
foo=teststring
bar=${$foo:0:5}
echo $bar

and getting the error same as above

Last edited by smile689; 06-25-2013 at 09:09 AM.. Reason: Added
 

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RUNKIT_METHOD_REDEFINE(3)						 1						 RUNKIT_METHOD_REDEFINE(3)

runkit_method_redefine - Dynamically changes the code of the given method

SYNOPSIS
bool runkit_method_redefine (string $classname, string $methodname, string $args, string $code, [int $flags = RUNKIT_ACC_PUBLIC]) DESCRIPTION
Note This function cannot be used to manipulate the currently running (or chained) method. Warning This function is EXPERIMENTAL. The behaviour of this function, its name, and surrounding documentation may change without notice in a future release of PHP. This function should be used at your own risk. PARAMETERS
o $classname - The class in which to redefine the method o $methodname - The name of the method to redefine o $args - Comma-delimited list of arguments for the redefined method o $code - The new code to be evaluated when $methodname is called o $flags - The redefined method can be RUNKIT_ACC_PUBLIC, RUNKIT_ACC_PROTECTED or RUNKIT_ACC_PRIVATE Note This parameter is only used as of PHP 5, because, prior to this, all methods were public. RETURN VALUES
Returns TRUE on success or FALSE on failure. EXAMPLES
Example #1 runkit_method_redefine(3) example <?php class Example { function foo() { return "foo! "; } } // create an Example object $e = new Example(); // output Example::foo() (before redefine) echo "Before: " . $e->foo(); // Redefine the 'foo' method runkit_method_redefine( 'Example', 'foo', '', 'return "bar! ";', RUNKIT_ACC_PUBLIC ); // output Example::foo() (after redefine) echo "After: " . $e->foo(); ?> The above example will output: Before: foo! After: bar! SEE ALSO
runkit_method_add(3), runkit_method_copy(3), runkit_method_remove(3), runkit_method_rename(3), runkit_function_redefine(3). PHP Documentation Group RUNKIT_METHOD_REDEFINE(3)
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