Hi everybody,
I want to know how can i use the command 'expr' to manipulate float number , i have a shell bash and when (for example) i do:
y1=`expr \( 1/ 16 \)`
it returns 0
and if i do
y1=`expr \( 1.6 / 16 \)`
it returns non numeric argument.
is there another command for mathematic... (4 Replies)
I need to accept a number of arguments at command line and print it in reverse order
i use eval `echo x=$1` to capture the argument
#! /bin/sh
counter=0
while
do
eval `echo x=$1`
arg$counter=$x
counter=`expr $counter + 1`
shift
done
but the error keeps... (1 Reply)
i got a file called Marks
The format of Marks is:
12345678 5 7
23456789 7 9 3
What can i do with a loop, read expr and echo command to produce a new file like below:
12345678:12
23456789:20
and also when we adding fewer than 3 value with expr, we need to change any null value for... (13 Replies)
Hi all,
i am facing the error "expr: non-numeric argument" when i use the expr command.
Following is the expression which i want to execute
HR=$(echo `date +%H`)
MIN=$(echo `date +%M`)
TOT_MIN=`expr "$HR" \* 60+$MIN` | bc
echo $TOT_MIN
Here I am being reported with the error expr:... (6 Replies)
i wrote this simple shell script
#!/bin/bash
read N1
read N2
expr $N1 + $N2
it work fine in bash and i add it on xinetd for some test but when i try to use in with telnet i got this error :
ehsan@debian:~$ telnet 192.168.1.4 1234
Trying 192.168.1.4...
Connected to 192.168.1.4.... (14 Replies)
Hi,
I am trying to execute a simple script as below to compare a value from a file and copy that line based on a condition.
while read line
do
code_check = `expr substr "$line" 6 1`
if ; then
echo "${line}" >> /temp/bill/push_updated.dat
else
echo "line ignored"
fi
done <... (8 Replies)
Hi,
I am new to shell/bash script. I am trying to run below script
#!/bin/bash
a=0
b=10
if
then
echo "a is equal to be"
else
echo "a is not equal to be"
fi
MAX=10
while
do
echo $a
a='expr $a + 1'
done (1 Reply)
This is my code.... It works correct, but does not work with 4 and 5. My program is about finding average. so when i run 4 5 it gives me error "expr: non-integer argument".
But when i say sh average 45 67 it works. Whats wrong?how to fix it?
sum=0
n=0
if
then
for i in $*
do
if
... (2 Replies)
The username is of the format : 123456789110000-1234@something.com
With this below TCL procedure, I am trying add first and Sec Id and get third Id.
I checked in online compiler and it seems to work and add. However, when I am running this in my lab, I get error as "integer value too large to... (3 Replies)
Hi,
I tried to look up the issue i'm experiencing, but i'm confused what's wrong with my script.
After executing the script I'm getting the following error
expr: non-numeric argument
syntax error on line 1, teletype
After some research, it seems that the problem relates to bc.
I have... (1 Reply)
Discussion started by: nms
1 Replies
LEARN ABOUT PHP
pg_fetch_row
PG_FETCH_ROW(3)PG_FETCH_ROW(3)pg_fetch_row - Get a row as an enumerated arraySYNOPSIS
array pg_fetch_row (resource $result, [int $row])
DESCRIPTION pg_fetch_row(3) fetches one row of data from the result associated with the specified $result resource.
Note
This function sets NULL fields to the PHP NULL value.
PARAMETERS
o $result
- PostgreSQL query result resource, returned by pg_query(3), pg_query_params(3) or pg_execute(3) (among others).
o $row
- Row number in result to fetch. Rows are numbered from 0 upwards. If omitted or NULL, the next row is fetched.
RETURN VALUES
An array, indexed from 0 upwards, with each value represented as a string. Database NULL values are returned as NULL.
FALSE is returned if $row exceeds the number of rows in the set, there are no more rows, or on any other error.
EXAMPLES
Example #1
pg_fetch_row(3) example
<?php
$conn = pg_pconnect("dbname=publisher");
if (!$conn) {
echo "An error occurred.
";
exit;
}
$result = pg_query($conn, "SELECT author, email FROM authors");
if (!$result) {
echo "An error occurred.
";
exit;
}
while ($row = pg_fetch_row($result)) {
echo "Author: $row[0] E-mail: $row[1]";
echo "<br />
";
}
?>
SEE ALSO pg_query(3), pg_fetch_array(3), pg_fetch_object(3), pg_fetch_result(3).
PHP Documentation Group PG_FETCH_ROW(3)