How would one go about deleting the first two characters on each line of a file on Unix? I thought about using awk, but cannot seem to find if it can explicitly do this. In this case there might or might not be a field separator. Meaning that the data might look like this.
01999999999... (5 Replies)
I have a file that looks like this:
It is a huge file and basically I want to delete everything at the > line except for the number after “C”.
>c1154... (2 Replies)
Hi,
I have a log file whose size is number of characters in the file with multiple lines.
Example:
SQL*Loader: Release 10.2.0.4.0 - Production on Sat Sep 12 07:55:29 2009
Copyright (c) 1982, 2007, Oracle. All rights reserved.
Control File: ../adm/ctl/institution.ctl
Character Set... (4 Replies)
Hi,
I want to delete rows whenever column one has the letters 'rpa'. The file is tab seperated.
e.g.
years 1
bears 1
cats 2
rpat 3
rpa99 4
rpa011 5
then removing 'rpa' containing rows based on the first column
years 1
bears 1
cats 2
thanks (7 Replies)
Hi All,
I have a text file with the following text in it:
file:///About/accessibility.html
file:///About/disclaimer.html
file:///About/disclaimer.html#disclaimer
file:///pubmed?term=%22Dacre%20I%22%5BAuthor%5D
file:///pubmed?term=%22Madigan%20J%22%5BAuthor%5D... (8 Replies)
sed -e "s// /g" old.txt > new.txt
While I do know some control characters need to be escaped, can normal characters also be escaped and still work the same way? Basically I do not know all control characters that have a special meaning, for example, ?, ., % have a meaning and have to be escaped... (11 Replies)
I am trying to find a specific set of characters in a long file. I only want to find the characters in column 265 for 4 bytes.
Is there a search for that? I tried cut but couldn't get it to work.
Ex. I want to find '9999' in column 265 for 4 bytes. If it is in there, I want it to print... (12 Replies)
Hi all, I need help.
I have an input text file (input.txt) like this:
21 GTGCAACACCGTCTTGAGAGG 50
21 GACCGAGACAGAATGAAAATC 73
21 CGGGTCTGTAGTAGCAAACGC 108
21 CGAAAAATGAACCCCTTTATC 220
21 CGTGATCCTGTTGAAGGGTCG 259
Now I need to count A/T/G/C numbers at each character location in column... (2 Replies)
What's one single UNIX pipeline that would delete all of the vowels from one file (global)?
I know I would need to use the sed command. But I'm stuck after that. i know how to replace characters with other characters I just don't know how to fully get rid of it. (4 Replies)
Discussion started by: sarahahah
4 Replies
LEARN ABOUT PHP
db2_fetch_array
DB2_FETCH_ARRAY(3) 1 DB2_FETCH_ARRAY(3)db2_fetch_array - Returns an array, indexed by column position, representing a row in a result setSYNOPSIS
array db2_fetch_array (resource $stmt, [int $row_number = -1])
DESCRIPTION
Returns an array, indexed by column position, representing a row in a result set. The columns are 0-indexed.
PARAMETERS
o $stmt
- A valid stmt resource containing a result set.
o $row_number
- Requests a specific 1-indexed row from the result set. Passing this parameter results in a PHP warning if the result set uses a
forward-only cursor.
RETURN VALUES
Returns a 0-indexed array with column values indexed by the column position representing the next or requested row in the result set.
Returns FALSE if there are no rows left in the result set, or if the row requested by $row_number does not exist in the result set.
EXAMPLES
Example #1
Iterating through a forward-only cursor
If you call db2_fetch_array(3) without a specific row number, it automatically retrieves the next row in the result set.
<?php
$sql = "SELECT id, name, breed, weight FROM animals ORDER BY breed";
$stmt = db2_prepare($conn, $sql);
$result = db2_execute($stmt);
while ($row = db2_fetch_array($stmt)) {
printf ("%-5d %-16s %-32s %10s
",
$row[0], $row[1], $row[2], $row[3]);
}
?>
The above example will output:
0 Pook cat 3.20
5 Rickety Ride goat 9.70
2 Smarty horse 350.00
Example #2
Retrieving specific rows with db2_fetch_array(3) from a scrollable cursor
If your result set uses a scrollable cursor, you can call db2_fetch_array(3) with a specific row number. The following example
retrieves every other row in the result set, starting with the second row.
<?php
$sql = "SELECT id, name, breed, weight FROM animals ORDER BY breed";
$result = db2_exec($stmt, $sql, array('cursor' => DB2_SCROLLABLE));
$i=2;
while ($row = db2_fetch_array($result, $i)) {
printf ("%-5d %-16s %-32s %10s
",
$row[0], $row[1], $row[2], $row[3]);
$i = $i + 2;
}
?>
The above example will output:
0 Pook cat 3.20
5 Rickety Ride goat 9.70
2 Smarty horse 350.00
SEE ALSO db2_fetch_assoc(3), db2_fetch_both(3), db2_fetch_object(3), db2_fetch_row(3), db2_result(3).
PHP Documentation Group DB2_FETCH_ARRAY(3)