But sometimes one can do someting with nonportable options.
One example is the echo command. For ages I used echo \t\b\n to echo tab, bel or newline. But this does not work anymore in bash. If you want echo to interpret escaped characters, you must use the -e option: echo -e \t\b\n .
So portable scripts often use this construction:
So this is what you can do: use variables to store options.
I am new to HP-UX.
I have an 8GB drive that is my root drive, contained in a Volume Group.
I would like to clone that drive to another drive, which is 18.4GB. The other drive is not in a volume group.
I am using this simple command:# dd if=/dev/dsk/c0t6d0 of=/dev/dsk/c0t5d0The command... (4 Replies)
Hi
I need to know if I have got the following grep command correct. I wanted to find from myfile.txt all signed real numbers (e.g. +5.0, -78, but not 5.0, 5 are not).
I have thought about it and decided it was this:
grep '' myfile.txt
but I was wondering if this was correct. If... (2 Replies)
We have script like this in the .bash_profile..
#-# determine if session is interactive or in background
if ]; then
while true; do
read -p "Do you wish to load profile yes or no?" yn
case $yn in
* ) source /opt/oracle/.profile; break;;
* ) break;;
*... (2 Replies)
Hi guys,
i've wrote the following loop;
for i in `ls`
do
cd $i/host
cat "xxxx.txt" |grep "yyyy" >> zzzz.txt
done
I have a set of folder with different name and i need to extract a value from a file contained in the host subfolder ( that is present in each folder).
When i run... (4 Replies)
I was trying to copy all debs from apt cache to some storage location and I was taking this approach...
/var/cache/apt/archives# ls -1 | grep -v jdownloader | fgrep .deb | xargs cp /media/eshant/L-STORE/Softwares/openjdk/an error bla_bla.deb is a not directory stalled me
Suggestions please... (9 Replies)
Discussion started by: ezee
9 Replies
6. Post Here to Contact Site Administrators and Moderators
Hi All,
There are list of 4-5 .csv files which has 12 columns.In some cases one of the record is split into 2 records. What needs to be done is this split record has to be auto corrected and placed in the csv file.
Eg:
Let us consider sample.csv file and in normal conditions the file... (1 Reply)
Hi All,
There are list of 4-5 .csv files which has 12 columns.In some cases one of the record is split into 2 records. What needs to be done is this split record has to be auto corrected and placed in the csv file.
Eg:
Let us consider sample.csv file and in normal conditions the file would... (40 Replies)
Hi all,
I am newbie to linux environment. I was trying to run an .so file manually which in turn call a method in bin folder.
Command given,
XXX_MODULES=libxxx.so /opt/servicename/bin/methodname -Le -c /opt/servicename/etc/methodname/methodname.conf -n -C -t -m ""
When i tried to... (1 Reply)
Hi all,
I am newbie to linux environment. I was trying to run an .so file manually which in turn call a method in bin folder.
Command given,
XXX_MODULES=libxxx.so /opt/servicename/bin/methodname -Le -c /opt/servicename/etc/methodname/methodname.conf -n -C -t -m ""
When i tried to execute... (1 Reply)
Hi,
I am logged into as root & inside the home directory of another user.
ls -a
# ls -laq
total 44
drwx------ 4 user1 adm 4096 Nov 23 05:10 .
drwxr-xr-x. 12 root root 4096 Nov 22 13:05 ..
-rw-r--r-- 1 user1 adm 18 Nov 22 13:05 .bash_logout
-rw-r--r-- 1 user1 adm 193 Nov... (2 Replies)
Discussion started by: mohtashims
2 Replies
LEARN ABOUT PHP
round
ROUND(3) 1 ROUND(3)round - Rounds a floatSYNOPSIS
float round (float $val, [int $precision], [int $mode = PHP_ROUND_HALF_UP])
DESCRIPTION
Returns the rounded value of $val to specified $precision (number of digits after the decimal point). $precision can also be negative or
zero (default).
Note
PHP doesn't handle strings like "12,300.2" correctly by default. See converting from strings.
PARAMETERS
o $val
- The value to round
o $precision
- The optional number of decimal digits to round to.
o $mode
- Use one of the following constants to specify the mode in which rounding occurs.
+--------------------+---------------------------------------------------+
| Constant | |
| | |
| | Description |
| | |
+--------------------+---------------------------------------------------+
| | |
| PHP_ROUND_HALF_UP | |
| | |
| | Round $val up to $precision decimal places away |
| | from zero, when it is half way there. Making 1.5 |
| | into 2 and -1.5 into -2. |
| | |
| | |
|PHP_ROUND_HALF_DOWN | |
| | |
| | Round $val down to $precision decimal places |
| | towards zero, when it is half way there. Making |
| | 1.5 into 1 and -1.5 into -1. |
| | |
| | |
|PHP_ROUND_HALF_EVEN | |
| | |
| | Round $val to $precision decimal places towards |
| | the next even value. |
| | |
| | |
|PHP_ROUND_HALF_ODD | |
| | |
| | Round $val to $precision decimal places towards |
| | the next odd value. |
| | |
+--------------------+---------------------------------------------------+
RETURN VALUES
The rounded value
EXAMPLES
Example #1
round(3) examples
<?php
echo round(3.4); // 3
echo round(3.5); // 4
echo round(3.6); // 4
echo round(3.6, 0); // 4
echo round(1.95583, 2); // 1.96
echo round(1241757, -3); // 1242000
echo round(5.045, 2); // 5.05
echo round(5.055, 2); // 5.06
?>
Example #2
$mode examples
<?php
echo round(9.5, 0, PHP_ROUND_HALF_UP); // 10
echo round(9.5, 0, PHP_ROUND_HALF_DOWN); // 9
echo round(9.5, 0, PHP_ROUND_HALF_EVEN); // 10
echo round(9.5, 0, PHP_ROUND_HALF_ODD); // 9
echo round(8.5, 0, PHP_ROUND_HALF_UP); // 9
echo round(8.5, 0, PHP_ROUND_HALF_DOWN); // 8
echo round(8.5, 0, PHP_ROUND_HALF_EVEN); // 8
echo round(8.5, 0, PHP_ROUND_HALF_ODD); // 9
?>
Example #3
$mode with precision examples
<?php
/* Using PHP_ROUND_HALF_UP with 1 decimal digit precision */
echo round( 1.55, 1, PHP_ROUND_HALF_UP); // 1.6
echo round( 1.54, 1, PHP_ROUND_HALF_UP); // 1.5
echo round(-1.55, 1, PHP_ROUND_HALF_UP); // -1.6
echo round(-1.54, 1, PHP_ROUND_HALF_UP); // -1.5
/* Using PHP_ROUND_HALF_DOWN with 1 decimal digit precision */
echo round( 1.55, 1, PHP_ROUND_HALF_DOWN); // 1.5
echo round( 1.54, 1, PHP_ROUND_HALF_DOWN); // 1.5
echo round(-1.55, 1, PHP_ROUND_HALF_DOWN); // -1.5
echo round(-1.54, 1, PHP_ROUND_HALF_DOWN); // -1.5
/* Using PHP_ROUND_HALF_EVEN with 1 decimal digit precision */
echo round( 1.55, 1, PHP_ROUND_HALF_EVEN); // 1.6
echo round( 1.54, 1, PHP_ROUND_HALF_EVEN); // 1.5
echo round(-1.55, 1, PHP_ROUND_HALF_EVEN); // -1.6
echo round(-1.54, 1, PHP_ROUND_HALF_EVEN); // -1.5
/* Using PHP_ROUND_HALF_ODD with 1 decimal digit precision */
echo round( 1.55, 1, PHP_ROUND_HALF_ODD); // 1.5
echo round( 1.54, 1, PHP_ROUND_HALF_ODD); // 1.5
echo round(-1.55, 1, PHP_ROUND_HALF_ODD); // -1.5
echo round(-1.54, 1, PHP_ROUND_HALF_ODD); // -1.5
?>
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.3.0 | |
| | |
| | The $mode parameter was introduced. |
| | |
| 5.2.7 | |
| | |
| | The inner workings of round(3) was changed to |
| | conform to the C99 standard. |
| | |
+--------+---------------------------------------------------+
SEE ALSO ceil(3), floor(3), number_format(3).
PHP Documentation Group ROUND(3)