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Full Discussion: Check if a variable is zero
Top Forums Shell Programming and Scripting Check if a variable is zero Post 302480689 by soujiv on Wednesday 15th of December 2010 01:42:29 PM
Old 12-15-2010
Check if a variable is zero

I have seen many posts for this sort of problem but I just did not know how to use it for my issue. A number is assigned to a variable and I wanted to check if it is a zero or non zero.

Example of my numbers are below:
000000000000000000000000000000000000000000000000
574E47303030303030303030303030303030303135313937

So "000000000000000000000000000000000000000000000000" is considered as zero and the other as non zero right, but how would I do that using IF statement?

The following is my script

Quote:
function getCorrelID {

cd /home/mqm/ma01
CORRELID=`./q -i$QUEUENAME -L1 -ddf2 2>&1 | sed -n '/Correl/{n;p;}' | sed 's/^[ \t]*//'`
echo $CORRELID
}

while read LINE
do
QUEUENAME=`echo $LINE | cut -d "," -f1`
echo $QUEUENAME
getCorrelID
if [ $CORRELID -eq "0" ]; then
echo "Null"
else
echo "Not Null"
fi
done<QueueList
The following is my output saying that the number "574E47303030303030303030303030303030303135313937" is not valid for the command.

Quote:
Output:

000000000000000000000000000000000000000000000000
Null
000000000000000000000000000000000000000000000000
Null
000000000000000000000000000000000000000000000000
Null
574E47303030303030303030303030303030303135313937
./correlid.sh[13]: 574E47303030303030303030303030303030303135313937: The specified number is not valid for this command.
Not Null
Please let me know if there are any suggestions on this.
Thank you!!
 

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OCI_FIELD_NAME(3)														 OCI_FIELD_NAME(3)

oci_field_name - Returns the name of a field from the statement

SYNOPSIS
string oci_field_name (resource $statement, mixed $field) DESCRIPTION
Returns the name of the $field. PARAMETERS
o $statement - A valid OCI statement identifier. o $field - Can be the field's index (1-based) or name. RETURN VALUES
Returns the name as a string, or FALSE on errors. EXAMPLES
Example #1 oci_field_name(3) example <?php // Create the table with: // CREATE TABLE mytab (number_col NUMBER, varchar2_col varchar2(1), // clob_col CLOB, date_col DATE); $conn = oci_connect("hr", "hrpwd", "localhost/XE"); if (!$conn) { $m = oci_error(); trigger_error(htmlentities($m['message']), E_USER_ERROR); } $stid = oci_parse($conn, "SELECT * FROM mytab"); oci_execute($stid, OCI_DESCRIBE_ONLY); // Use OCI_DESCRIBE_ONLY if not fetching rows echo "<table border="1"> "; echo "<tr>"; echo "<th>Name</th>"; echo "<th>Type</th>"; echo "<th>Length</th>"; echo "</tr> "; $ncols = oci_num_fields($stid); for ($i = 1; $i <= $ncols; $i++) { $column_name = oci_field_name($stid, $i); $column_type = oci_field_type($stid, $i); echo "<tr>"; echo "<td>$column_name</td>"; echo "<td>$column_type</td>"; echo "</tr> "; } echo "</table> "; // Outputs: // Name Type // NUMBER_COL NUMBER // VARCHAR2_COL VARCHAR2 // CLOB_COL CLOB // DATE_COL DATE oci_free_statement($stid); oci_close($conn); ?> NOTES
Note In PHP versions before 5.0.0 you must use ocicolumnname(3) instead. This name still can be used, it was left as alias of oci_field_name(3) for downwards compatability. This, however, is deprecated and not recommended. SEE ALSO
oci_num_fields(3), oci_field_type(3), oci_field_size(3). PHP Documentation Group OCI_FIELD_NAME(3)
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