I have been busy reading away on devices and filesystems and I am stuck on a particular subject matter.. I'm not understanding the concept behind mknod mkfifo makedev or related commands..
can anyone shed some light on the subject.!
any feedback welcome!
moxxx68 (0 Replies)
I'm having problem writing a shell script using bash that takes a file as an argument. The script should be able to determine what permissions the owner, group and everybody has for the file passed in.
could anyone plz help me out. (3 Replies)
#!/bin/bash
echo $1 | cat - $2 >> /tmp/$$ && mv /tmp/$$ $2
im trying to get the first argument to go in the middle of the second argument which is a file, anyone any ideas. i have only managed to get it to go on the end or the front.
been fiddling about with wc -l, i get the number of lines... (5 Replies)
Suppose that I have some data:
12,30
12,45
2,3
7,8
3,9
30, 8
45,54
56,65
Where (a,b) indicates that a is connected to b. I want to get all connected nodes to one point. For instance, the output of the above
example should be something like:
Group 1
2,3
3,9
Group 2
12,30
12,45... (4 Replies)
Hi all,
I have been struggling with this all day, and it is key to a conversion database I have to write.
The data converts the information out of an array using AWK, and basically all I have to do is figure out how to get the value of a variable inside a variable.
Right now at its... (11 Replies)
I want to search for the line with the group name and add the user into the group. The file format is the same as /etc/group
The code i wrote is
egrep "^$newGID" $group >/dev/null
FS=":"
oldData=awk -F: '{print $3}'
newData= "$oldData,$newUser"
sed -n $4/$newData $group
but a friend... (1 Reply)
Hi All
I have script that find 777 dir with specific extension like .php .Now after finding all 777 directory i will place in httpd.conf using a directory directive ,Now i was not do that,if directory entry exitst in httpd.conf then script ignor it dont show me at stdout else if it dont find... (2 Replies)
I am beginner in awk
awk 'BEGIN{for(i=1;(getline<"opnoise")>0;i++) arr=$1}{print arr}'
In the above script, opnoise is a file, I am reading it into an array and then printing the value corresponding to index 20. Well this is not my real objective, but I have posted this example to describe... (1 Reply)
I am developing a multi-threaded library that helps the transformation of messages between threads in different processes using shared memory.
I am using the pthreads condition facility in order to synchronize access to the shared memory slots through which the messages are passed.
My test... (2 Replies)
I was given this to do,
Write a Shell script to automatically check that a specified user is logged in to the computer.
The program should allow the person running the script to specify the name of the user to be checked, the frequency in seconds at which the script should check. If a... (1 Reply)
Discussion started by: operator
1 Replies
LEARN ABOUT PHP
gmp_div_q
GMP_DIV_Q(3) 1 GMP_DIV_Q(3)gmp_div_q - Divide numbersSYNOPSIS
GMP gmp_div_q (GMP $a, GMP $b, [int $round = GMP_ROUND_ZERO])
DESCRIPTION
Divides $a by $b and returns the integer result.
PARAMETERS
o $a
- The number being divided. Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a numeric
string provided that it is possible to convert the latter to a number.
o $b
- The number that $a is being divided by. Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later,
or a numeric string provided that it is possible to convert the latter to a number.
o $round
- The result rounding is defined by the $round, which can have the following values:
o GMP_ROUND_ZERO: The result is truncated towards 0.
o GMP_ROUND_PLUSINF: The result is rounded towards +infinity.
o GMP_ROUND_MINUSINF: The result is rounded towards -infinity.
Either a GMP number resource in PHP 5.5 and earlier, a GMP object in PHP 5.6 and later, or a numeric string provided that it is pos-
sible to convert the latter to a number.
RETURN VALUES
A GMP number resource in PHP 5.5 and earlier, or a GMP object in PHP 5.6 and later.
EXAMPLES
Example #1
gmp_div_q(3) example
<?php
$div1 = gmp_div_q("100", "5");
echo gmp_strval($div1) . "
";
$div2 = gmp_div_q("1", "3");
echo gmp_strval($div2) . "
";
$div3 = gmp_div_q("1", "3", GMP_ROUND_PLUSINF);
echo gmp_strval($div3) . "
";
$div4 = gmp_div_q("-1", "4", GMP_ROUND_PLUSINF);
echo gmp_strval($div4) . "
";
$div5 = gmp_div_q("-1", "4", GMP_ROUND_MINUSINF);
echo gmp_strval($div5) . "
";
?>
The above example will output:
20
0
1
0
-1
NOTES
Note
This function can also be called as gmp_div(3).
SEE ALSO gmp_div_r(3), gmp_div_qr(3).
PHP Documentation Group GMP_DIV_Q(3)