Id like to delete a line from a file using (preferably a single line unix command) if it contains a certain string pattern.
If line contains "abcdef" then delete that line.
Help greatly appreciated. (7 Replies)
guys i need some help in writing a shell script, what i am trying to write is a shell script that can delete generated trace files my software usually generated everyday, i will give an example to make it easy to understand
root@cms-db # pwd
/pcard17/trace
root@cms-db # ls -l HSM_VERIF.TRC*... (4 Replies)
Input:
a
b
b
c
d
d
I need:
a
c
I know how to get this (the lines that have duplicates) :
b
d
sort file | uniq -d
But i need opossite of this. I have searched the forum and other places as well, but have found solution for everything except this variant of the problem. (3 Replies)
hi :)
I need to delete partial duplicate lines
I have this in a file
sihp8027,/opt/cf20,1980182
sihp8027,/opt/oracle/10gRelIIcd,155200016
sihp8027,/opt/oracle/10gRelIIcd,155200176
sihp8027,/var/opt/ERP,10376312
and need to leave it like this:
sihp8027,/opt/cf20,1980182... (2 Replies)
Hello, this is probably a simple request but I've been toying with it for a while.
I have a large list of devices and commands that were run with a script, now I have lines such as:
a-router-hostname-C#show ver
I want to print everything up to (and excluding) the # and everything after it... (3 Replies)
Hi All,
I have a very huge file (4GB) which has duplicate lines. I want to delete duplicate lines leaving unique lines. Sort, uniq, awk '!x++' are not working as its running out of buffer space.
I dont know if this works : I want to read each line of the File in a For Loop, and want to... (16 Replies)
Hey guys,
I have a file with an ID which I'm using to grep out the original record from another file. Problem is I have special characters in the original file, and grep is returning only a partial record. How can I get around this?
Appreciate your help!
Pete (3 Replies)
hey guys,
I tried searching but most 'search and replace' questions are related to one liners.
Say I have a file to be replaced that has the following:
$ cat testing.txt
TESTING
AAA
BBB
CCC
DDD
EEE
FFF
GGG
HHH
ENDTESTING
This is the input file: (3 Replies)
Hello,
I'm trying to figure out how to use sed or awk to delete single lines in a file. By single, I mean lines that are not touching any other lines (just one line with white space above and below).
Example:
one
two
three
four
five
six
seven
eight
I want it to look like: (6 Replies)
Background: I use a TV tuner card to capture OTA video files (.mpeg) and then my Plex Media Server automatically optimizes the files (transcodes for better playback) and places them in a new directory. I have another Plex Library pointing to the new location for the optimized .mp4 files. This... (2 Replies)
Discussion started by: shaky
2 Replies
LEARN ABOUT PHP
mysql_affected_rows
MYSQL_AFFECTED_ROWS(3) 1 MYSQL_AFFECTED_ROWS(3)mysql_affected_rows - Get number of affected rows in previous MySQL operationSYNOPSIS
Warning
This extension is deprecated as of PHP 5.5.0, and will be removed in the future. Instead, the MySQLi or PDO_MySQL extension should
be used. See also MySQL: choosing an API guide and related FAQ for more information. Alternatives to this function include:
omysqli_affected_rows(3)
o PDOStatement::rowCount
int mysql_affected_rows ([resource $link_identifier = NULL])
DESCRIPTION
Get the number of affected rows by the last INSERT, UPDATE, REPLACE or DELETE query associated with $link_identifier.
o $
link_identifier -The MySQL connection. If the link identifier is not specified, the last link opened by mysql_connect(3) is
assumed. If no such link is found, it will try to create one as if mysql_connect(3) was called with no arguments. If no connection
is found or established, an E_WARNING level error is generated.
Returns the number of affected rows on success, and -1 if the last query failed.
If the last query was a DELETE query with no WHERE clause, all of the records will have been deleted from the table but this function will
return zero with MySQL versions prior to 4.1.2.
When using UPDATE, MySQL will not update columns where the new value is the same as the old value. This creates the possibility that
mysql_affected_rows(3) may not actually equal the number of rows matched, only the number of rows that were literally affected by the
query.
The REPLACE statement first deletes the record with the same primary key and then inserts the new record. This function returns the number
of deleted records plus the number of inserted records.
In the case of "INSERT ... ON DUPLICATE KEY UPDATE" queries, the return value will be 1 if an insert was performed, or 2 for an update of
an existing row.
Example #1
mysql_affected_rows(3) example
<?php
$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
if (!$link) {
die('Could not connect: ' . mysql_error());
}
mysql_select_db('mydb');
/* this should return the correct numbers of deleted records */
mysql_query('DELETE FROM mytable WHERE id < 10');
printf("Records deleted: %d
", mysql_affected_rows());
/* with a where clause that is never true, it should return 0 */
mysql_query('DELETE FROM mytable WHERE 0');
printf("Records deleted: %d
", mysql_affected_rows());
?>
The above example will output something similar to:
Records deleted: 10
Records deleted: 0
Example #2
mysql_affected_rows(3) example using transactions
<?php
$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');
if (!$link) {
die('Could not connect: ' . mysql_error());
}
mysql_select_db('mydb');
/* Update records */
mysql_query("UPDATE mytable SET used=1 WHERE id < 10");
printf ("Updated records: %d
", mysql_affected_rows());
mysql_query("COMMIT");
?>
The above example will output something similar to:
Updated Records: 10
Note
Transactions
If you are using transactions, you need to call mysql_affected_rows(3) after your INSERT, UPDATE, or DELETE query, not after the
COMMIT.
Note
SELECT Statements
To retrieve the number of rows returned by a SELECT, it is possible to use mysql_num_rows(3).
Note
Cascaded Foreign Keys
mysql_affected_rows(3) does not count rows affected implicitly through the use of ON DELETE CASCADE and/or ON UPDATE CASCADE in for-
eign key constraints.
mysql_num_rows(3), mysql_info(3).
PHP Documentation Group MYSQL_AFFECTED_ROWS(3)