03-17-2008
add text in the middle of file
Can anyone help me pls? I want to add a text into the middle of file.
I've writtenthe following script
text to add="$1"
file="$2"
lines=$(wc -l $2)
half_lines=$(expr $lines / 2)
head -$half_lines $2 > temp
echo "text to add" >> temp
((half_lines=$half_lines + 1))
tail -$half_lines $2 >> temp
mv temp $2
it gives me `expr : syntax error
Can someone tell me what i did wrong. Was i not to use expr command?
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LEARN ABOUT PHP
maxdb_stmt_errno
MAXDB_STMT_ERRNO(3) 1 MAXDB_STMT_ERRNO(3)
maxdb_stmt_errno - Returns the error code for the most recent statement call
Procedural style
SYNOPSIS
int maxdb_stmt_errno (resource $stmt)
DESCRIPTION
Object oriented style
int$maxdb_stmt->errno ()
For the statement specified by stmt, maxdb_stmt_errno(3) returns the error code for the most recently invoked statement function that can
succeed or fail.
Note
For possible error codes see documentation of SQLDBC: http://maxdb.sap.com/documentation/.
RETURN VALUES
An error code value. Zero means no error occurred.
EXAMPLES
Example #1
Object oriented style
<?php
/* Open a connection */
$maxdb = new maxdb("localhost", "MONA", "RED", "DEMODB");
/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s
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exit();
}
$maxdb->query("CREATE TABLE temp.mycity LIKE hotel.city");
$maxdb->query("INSERT INTO temp.mycity SELECT * FROM hotel.city");
$query = "SELECT name, zip FROM temp.mycity ORDER BY name";
if ($stmt = $maxdb->prepare($query)) {
/* drop table */
$maxdb->query("DROP TABLE temp.mycity");
/* execute query */
$stmt->execute();
printf("Error: %d.
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/* close statement */
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Example #2
Procedural style
<?php
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/* check connection */
if (maxdb_connect_errno()) {
printf("Connect failed: %s
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maxdb_query($link, "CREATE TABLE temp.mycity LIKE hotel.city");
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?>
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Warning: maxdb_stmt_execute(): -4004 POS(23) Unknown table name:MYCITY [42000] <...>
Error: -4004.
SEE ALSO
maxdb_stmt_error(3), maxdb_stmt_sqlstate(3).
PHP Documentation Group MAXDB_STMT_ERRNO(3)