Not really. You could come up with a clever ${var#something} substitution but it would be rather more complex.
There's a space and a tab between [! and ].
If it is safe to not quote the variable, then simply using it without quotes will discard leading and trailing whitespace, and compress any internal whitespace.
Last edited by era; 09-23-2008 at 09:43 AM..
Reason: Use variable unquoted?
I am trying to strip all leading and trailing spaces of a shell variable using either awk or sed or any other utility, however unscuccessful and need your help.
echo $SH_VAR | command_line Syntax.
The SH_VAR contains embedded spaces which needs to be preserved. I need only for the leading and... (6 Replies)
Hi,
my var is:
PATH_LOG=/opt/WebSphere/CR Comune Roma.log
a filename which contains blank chars.
How can I call it from prompt ?
Ex:
ls $PATH_LOG or
cat $PATH_LOG
tks,
Carmen- (2 Replies)
Hi All,
I have a requirement, in which i have to append some spaces to the variable, and then send it to another function.
I am new to the UNIX shell programming. Ultimately the length of the string should be 40 characters.
exp:
Login = "rallapalli" (length = 10)
i have to append 30 spaces to... (2 Replies)
Hi,
i have to form the header and add fillers(spaces) to it.
I have done something like this. i have added 10 spaces at the end
HDR="AAAABBBBCCNN "
echo $HDR >> file1.dat
but the spaces are not being stored in the file. How to add the spaces. (2 Replies)
Hello all. I am a newb obviously and a bit stumped on this, so any help gratefully accepted.
The script is extracting metadata from individual mp3 files, then (hopefully will be) sorting them into newly-created subdirectories. I have filtered out the relevant metadata and have the album names... (8 Replies)
Hi i have an input " load /appss/asdfas/...
I want to take the string present between first / / i.e appss
Input is "load /appss/asdfas/..."
Expected output is appss
Thanks in advance
Ananth (9 Replies)
Gooday
I have an argument string that contains 15 arguments.
The first 14 arguments are easy to handle because they are separated by spaces
ARG14=`echo ${ARGSTRING} | awk '{print $14}'`
The last argument is a text that may be empty or contain spaces. So any ideas on how I get the last... (23 Replies)
Hi,
I'm passing a variable to a scrpit which can be 1 to 3 characters long.
How can I force it to be three character long and add spaces to it?
The passed variable is stored in $1 and I would like to be stored in NewName
I tried without success
NewName=$(printf "%*s 3 $1)
So if... (2 Replies)
Hi, I have a big csv file with below data.
file:
La Cage Aux Folles (Widescreen)
Famous Mystics and Psychics
A Passion for Planning Financials Operations Marketing Management and Ethics
Precious Moments Holy Bible New King James Version Precious Angels Edition Blue
Practical Recording... (9 Replies)
Discussion started by: Raghuram717
9 Replies
LEARN ABOUT PHP
is_scalar
IS_SCALAR(3) 1 IS_SCALAR(3)is_scalar - Finds whether a variable is a scalarSYNOPSIS
bool is_scalar (mixed $var)
DESCRIPTION
Finds whether the given variable is a scalar.
Scalar variables are those containing an integer, float, string or boolean. Types array, object and resource are not scalar.
Note
is_scalar(3) does not consider resource type values to be scalar as resources are abstract datatypes which are currently based on
integers. This implementation detail should not be relied upon, as it may change.
Note
is_scalar(3) does not consider NULL to be scalar.
PARAMETERS
o $var
- The variable being evaluated.
RETURN VALUES
Returns TRUE if $var is a scalar, FALSE otherwise.
EXAMPLES
Example #1
is_scalar(3) example
<?php
function show_var($var)
{
if (is_scalar($var)) {
echo $var;
} else {
var_dump($var);
}
}
$pi = 3.1416;
$proteins = array("hemoglobin", "cytochrome c oxidase", "ferredoxin");
show_var($pi);
show_var($proteins)
?>
The above example will output:
3.1416
array(3) {
[0]=>
string(10) "hemoglobin"
[1]=>
string(20) "cytochrome c oxidase"
[2]=>
string(10) "ferredoxin"
}
SEE ALSO is_float(3), is_int(3), is_numeric(3), is_real(3), is_string(3), is_bool(3), is_object(3), is_array(3).
PHP Documentation Group IS_SCALAR(3)