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
is_numeric
IS_NUMERIC(3) 1 IS_NUMERIC(3)is_numeric - Finds whether a variable is a number or a numeric stringSYNOPSIS
bool is_numeric (mixed $var)
DESCRIPTION
Finds whether the given variable is numeric. Numeric strings consist of optional sign, any number of digits, optional decimal part and
optional exponential part. Thus +0123.45e6 is a valid numeric value. Hexadecimal (e.g. 0xf4c3b00c), Binary (e.g. 0b10100111001), Octal
(e.g. 0777) notation is allowed too but only without sign, decimal and exponential part.
PARAMETERS
o $var
- The variable being evaluated.
RETURN VALUES
Returns TRUE if $var is a number or a numeric string, FALSE otherwise.
EXAMPLES
Example #1
is_numeric(3) examples
<?php
$tests = array(
"42",
1337,
0x539,
02471,
0b10100111001,
1337e0,
"not numeric",
array(),
9.1
);
foreach ($tests as $element) {
if (is_numeric($element)) {
echo "'{$element}' is numeric", PHP_EOL;
} else {
echo "'{$element}' is NOT numeric", PHP_EOL;
}
}
?>
The above example will output:
SEE ALSO ctype_digit(3), is_bool(3), is_null(3), is_float(3), is_int(3), is_string(3), is_object(3), is_array(3).
PHP Documentation Group IS_NUMERIC(3)