I'm tryning to do something like this,
I have this file:
spaces12tabgoodbye
spaces3tabhello
I want to copy to another file the lines that have the number above 10...
I thought using sort -rn but I don't know how to discard the lines that have the number below 10.
Any idea?
Thanks (3 Replies)
I need to distinguish between numerical characters in a script:
echo "Enter a number."
read num
if (( $num = * )) ; then
exit 0
fi
this RegX does not work.
Any suggestions? (5 Replies)
Hi, All,
I want to calculate a specific value of a Gaussian distribution, say the mean is a=3, variance is b=5, the indepentent variable is x=2, how could I get the y which is the Gaussian distribution value of x.
Thanks,
Jenny (1 Reply)
Say for example I have a list of numbers..
5
10
13
48
1
could I use grep to show only those numbers that are above 10? For various reasons I can only use grep... not awk or sed etc. (7 Replies)
Hi
I have a variable which should be any number between 1 and 50.
It could also be any string/empty string.
I have a code written below. The point is when the variable contains string.
I don't want the code below to error out. Instead fall in the else bucket.
&& dothis_1 || dothis_2 (1 Reply)
Hi,
Hope someone can shed some light on this...
I have two lists of numbers I am comparing using COMM. If the first list is empty, and I sort both lists like so:
DIFF=`comm -3 <(echo "$EMPTY" | sort -n) <(echo "$NUMBERS" | sort -n)`I get the error: comm: file 2 is not in sorted order
But... (2 Replies)
Hi,
I have been working on this problem, but could only get so far. I have a file that looks like this
(cat,chimp,(((dog,cat,cow),orangutan),((horse,((cat,dog),(cow,pig))),cat,mouse,rat)));
I would like after each instance of the word 'cat' to have an incrementing numerical label.
I... (5 Replies)
Hi,
I have a large number of files which are named as follows.
VF_50, VF_100, VF_150, VF_250, VF_300, VF_350, VF_400, VF_450, VF_500.
When I do an 'ls' it arranges the files in the following way
VF_100, VF_150, VF_250, VF_300, VF_350, VF_400, VF_450, VF_50, VF_500.
Is there a way to... (2 Replies)
I'm new to Unix and I have been trying to fix this problem for the past week.
How would I use grep to display only certain numbers for a list. For example, if I have this list:
Joe senior 4/50
John junior 25/50
Mary junior 41/50
Martha sophomore 2/50
...How do I get a file... (1 Reply)
Hello Team,
I need bash script to check if my output is non numerical or empty. if its then my output should display default value as 0
basically, I am reading value from txt file. most of numerical value, in case there is no numerical value or its empty, then my output should be 0.
... (5 Replies)
Discussion started by: ghpradeep
5 Replies
LEARN ABOUT PHP
pg_get_notify
PG_GET_NOTIFY(3)PG_GET_NOTIFY(3)pg_get_notify - Gets SQL NOTIFY messageSYNOPSIS
array pg_get_notify (resource $connection, [int $result_type])
DESCRIPTION pg_get_notify(3) gets notifications generated by a NOTIFY SQL command. To receive notifications, the LISTEN SQL command must be issued.
PARAMETERS
o $connection
- PostgreSQL database connection resource.
o $result_type
- An optional parameter that controls how the returned array is indexed. $result_type is a constant and can take the following
values: PGSQL_ASSOC, PGSQL_NUM and PGSQL_BOTH. Using PGSQL_NUM, pg_get_notify(3) will return an array with numerical indices,
using PGSQL_ASSOC it will return only associative indices while PGSQL_BOTH, the default, will return both numerical and associa-
tive indices.
RETURN VALUES
An array containing the NOTIFY message name and backend PID. Otherwise if no NOTIFY is waiting, then FALSE is returned.
EXAMPLES
Example #1
PostgreSQL NOTIFY message
<?php
$conn = pg_pconnect("dbname=publisher");
if (!$conn) {
echo "An error occurred.
";
exit;
}
// Listen 'author_updated' message from other processes
pg_query($conn, 'LISTEN author_updated;');
$notify = pg_get_notify($conn);
if (!$notify) {
echo "No messages
";
} else {
print_r($notify);
}
?>
SEE ALSO pg_get_pid(3).
PHP Documentation Group PG_GET_NOTIFY(3)