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Full Discussion: Reuse Variable..
Top Forums Shell Programming and Scripting Reuse Variable.. Post 302401852 by clx on Monday 8th of March 2010 04:38:09 AM
Old 03-08-2010
Quote:
that $file_name variable won't take the latest value assigned to the $cv?
This is correct. and the filename will take the latest value.
(only of those which are assigned before defining filename variable.)
if you assign a new value to CV after filename then filename is unaffected (clear though!).

Code:
cv=1
cv=2
file=a_$cv
cv=3

$file will still contain the a_2 ( cv=2).

shell reads the commands one by one.. top to bottom.

moreover, not sure which shell you are using.. but i can see lots of syntax errors and improvement in your code as par my knowledge.



Code:
job_name="$(echo "load_didrnge.sh")" ==> job_name="load_didrnge.sh"
table_name="$(echo "DIDRNGE")" ==> table_name="DIDRNGE"
cv="$(echo "CV000")" ==> cv="CV000"


cv="$(print 'CV09')" ==> cv="CV09"

# invalid commnad substitution. syntx err!.
file_name=`CP99978_`$cv`.TXT` ==> file_name=CP99978_${cv}.TXT 

# again same thing
file_name="$(awk '{print $1}' $cv )" ==> file_name="$(echo $cv | awk '{print $1}')" or file_name="$(awk '{print $1}' <<< $cv)"

hope it helps.
 

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FINFO_FILE(3)								 1							     FINFO_FILE(3)

finfo_file - Return information about a file

       Procedural style

SYNOPSIS
string finfo_file NULL NULL (resource $finfo, string $file_name, [int $options = FILEINFO_NONE], [resource $context]) DESCRIPTION
Object oriented style string finfo::file NULL NULL (string $file_name, [int $options = FILEINFO_NONE], [resource $context]) This function is used to get information about a file. PARAMETERS
o $finfo - Fileinfo resource returned by finfo_open(3). o $file_name - Name of a file to be checked. o $options - One or disjunction of more Fileinfo constants. o $context - For a description of contexts, refer to "Stream Functions". RETURN VALUES
Returns a textual description of the contents of the $file_name argument, or FALSE if an error occurred. EXAMPLES
Example #1 A finfo_file(3) example <?php $finfo = finfo_open(FILEINFO_MIME_TYPE); // return mime type ala mimetype extension foreach (glob("*") as $filename) { echo finfo_file($finfo, $filename) . " "; } finfo_close($finfo); ?> The above example will output something similar to: text/html image/gif application/vnd.ms-excel SEE ALSO
finfo_buffer(3). PHP Documentation Group FINFO_FILE(3)
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