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1. Shell Programming and Scripting
Hi,
I Have to check two condition in while loop every 2 minutes. while loop is accompanied with number of times it will check.Please help in putting the two condition in while loop as appropriate.
z= input value,
A=1
while
do
1.check the file output,if the file output is N then keep on... (2 Replies)
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2. Shell Programming and Scripting
Guys,
Please help me on the below
sample.cfg
var=NULL
sample.sh
#!/bin/sh
. /sample.cfg
if ;then
1 st command here
else
2 nd command here
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3. Shell Programming and Scripting
Hello experts,
I'm stuck with this script for three days now. Here's what i need.
I need to split a large delimited (,) file into 2 files based on the value present in the last field.
Samp: Something.csv
bca,adc,asdf,123,12C
bca,adc,asdf,123,13C
def,adc,asdf,123,12A
I need this split... (6 Replies)
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4. Shell Programming and Scripting
Hi All,
I want to check existence of variable, whose name gets decided dynamically.
E.g. value of this variable,is derived as $option_"exclude" , where value of option varies depending upon user input.
I am trying to do it in a following way :
set exclude_var = `echo $option"_exclude"`... (3 Replies)
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5. Shell Programming and Scripting
Hi,
I am in trouble. I can get inside my condition test inside a loop :
I am in ksh (solaris)
while read file
do
<commande to retrieve file> >> ${LOG_RETRIEVE_FILE.log}
msg_err=$(cat ${LOG_RETRIEVE_FILE.log} | grep "error retrieve")
if ; then
<sendmail>
exit 1
fi
done
I tried... (6 Replies)
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6. Shell Programming and Scripting
Hi all,
i got 2 text file.
file.txt
value.txt
i want use C shell script to write out
while both of the file got different limit....how i going to write it in 1 while loop? (4 Replies)
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7. UNIX for Dummies Questions & Answers
Hi:
I am struggling to get the simplest pattern matching to work, in csh.
In this line:
if ("$MY" =~ /my/) echo match
it seems that I just can not make it to match, even when $MY is "mymymy".
Thanks.
N.B Phil
---------- Post updated at 11:23 PM ---------- Previous update... (0 Replies)
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8. Shell Programming and Scripting
Hello
I want to compare values of two variables as CHECK condition in a while loop.
eg:
var1=0
var2=10
while
do
echo " $var1 "
var1=`expr $var1 + 1`
done
However this is giving error.How to do it in a proper manner?
Thanks. (3 Replies)
Discussion started by: dashing201
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9. Shell Programming and Scripting
I have a logic like this
It initializes the flag variable as "T" at the beginning of the loop everytime
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10. Shell Programming and Scripting
I have converted an excel file in unix accessible form using Spreadsheet::ParseExcel. It coverting perfectly but the problem is while coverting there is one column in the excel sheet which is when coverted in unix it shows the value along with some extra value like :
in excel sheet the value in... (0 Replies)
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DEBUG_ZVAL_DUMP(3) 1 DEBUG_ZVAL_DUMP(3)
debug_zval_dump - Dumps a string representation of an internal zend value to output
SYNOPSIS
void debug_zval_dump (mixed $variable, [mixed $...])
DESCRIPTION
Dumps a string representation of an internal zend value to output.
PARAMETERS
o $variable
- The variable being evaluated.
RETURN VALUES
No value is returned.
EXAMPLES
Example #1
debug_zval_dump(3) example
<?php
$var1 = 'Hello World';
$var2 = '';
$var2 =& $var1;
debug_zval_dump(&$var1);
?>
The above example will output:
&string(11) "Hello World" refcount(3)
Note
Beware the refcount
The refcount value returned by this function is non-obvious in certain circumstances. For example, a developer might expect the
above example to indicate a refcount of 2. The third reference is created when actually calling debug_zval_dump(3).
This behavior is further compounded when a variable is not passed to debug_zval_dump(3) by reference. To illustrate, consider a
slightly modified version of the above example:
Example #2
<?php
$var1 = 'Hello World';
$var2 = '';
$var2 =& $var1;
debug_zval_dump($var1); // not passed by reference, this time
?>
The above example will output:
string(11) "Hello World" refcount(1)
Why refcount(1)? Because a copy of $var1 is being made, when the function is called.
This function becomes even more confusing when a variable with a refcount of 1 is passed (by copy/value):
Example #3
<?php
$var1 = 'Hello World';
debug_zval_dump($var1);
?>
The above example will output:
string(11) "Hello World" refcount(2)
A refcount of 2, here, is extremely non-obvious. Especially considering the above examples. So what's happening?
When a variable has a single reference (as did $var1 before it was used as an argument to debug_zval_dump(3)), PHP's engine opti-
mizes the manner in which it is passed to a function. Internally, PHP treats $var1 like a reference (in that the refcount is
increased for the scope of this function), with the caveat that if the passed reference happens to be written to, a copy is made,
but only at the moment of writing. This is known as "copy on write."
So, if debug_zval_dump(3) happened to write to its sole parameter (and it doesn't), then a copy would be made. Until then, the
parameter remains a reference, causing the refcount to be incremented to 2 for the scope of the function call.
SEE ALSO
var_dump(3), debug_backtrace(3), References Explained, References Explained (by Derick Rethans).
PHP Documentation Group DEBUG_ZVAL_DUMP(3)