Hi everyone, I am new to UNIX, here I have a if statement elevating two boolean conditions. I thought the output should be True because there are [true] + [true] in the statement. But it turns out to be False.
Can anyone explain to me how to properly use the boolean condition here? Thanks a lot!
Last edited by Scott; 07-30-2013 at 03:22 AM..
Reason: Code tags
Hi,
I am trying to use && set up to match two conditions within ksh:
if &&
then
'''Do something
if
somehow, I keep getting error message telling me that ] is missing.
What's wrong with my code?
Thanks a lot for your help! (1 Reply)
Actually i need to satisfy both the condition..
lik i'm lookin for two different files.. and if BOTH the files r not present then it should run the followin script.. For example
inputfile1=data/in/inputfile1.txt
inputfile2=data/in/inputfile2.txt
if
then
echo " "
echo... (6 Replies)
I'm totally new with bash programming and I don't get it how to put two conditions in one if statement. My code looks like this:
h=`date +%k`
if && ]; then$h is 10 but I don't get into my if statement. What's wrong here? (5 Replies)
I have a script that runs on multiple servers. What I want to do is have the script do the following:
if $(hostname) is equal to server or server2
then
TO_DIR=go
else
TO_DIR=stop
fi
I have tried:
if
if ]
Server is hpux.
any ideas? (1 Reply)
I have a script that runs every 15 minutes in cron that builds a web page.
It runs at 15, 28, 45 and 58 minutes past the hour. (pretty much evry 15 mins).
Every 2 hours from 6:28 to 18:28 it sends out emails if it finds errors. I do not want it sending email every single time it runs, every 15... (5 Replies)
is it possible to use multiple conditions in a CASE statement? And if so, what is the syntax? I'm trying to use one but can't seem to get it right. I want the statement to be
CASE $vendor OR $alias
condition 1) statements;
condition 2) statements;
etc.
esac
but I keep... (25 Replies)
Hello,
I'm trying to put together a script that involves pulling data from a config file. I'm attempting to write an if statement to validate one of the pieces of data from the config file, but I think I'm fat fingering it somehow.
$config{VALUE} is being pulled from a config file but can only... (4 Replies)
I am trying to test two conditions in a single if and getting syntax error on -a and &&
if ] ; then
echo "variable a equals to variable b"
else
echo "variable a not equal to variable b"
fi
in second attempt I used -a instead of &&, referring to other website, but not sure that... (1 Reply)
I was trying to write multiple conditions inside the if statement but its not working.
export VAR_NM=abc.txt
export CURR_DT=20131011
export PREV_DT=20131012
if &&
then
echo "Yes"
else
echo "NO"
fi
It should return Yes but returning NO always.Appreciate any help. (3 Replies)
I wish to check two conditions inside the if statement
Condition 1: The two file contents should be identical // using cmp command for this.
Condition 2: The two filenames should NOT be the same.
This is what i did in vain.
if ]; then
where entry1 and entry2 are
ls *.txt | while... (7 Replies)
Discussion started by: mohtashims
7 Replies
LEARN ABOUT PHP
is_string
IS_STRING(3) 1 IS_STRING(3)is_string - Find whether the type of a variable is stringSYNOPSIS
bool is_string (mixed $var)
DESCRIPTION
Finds whether the type given variable is string.
PARAMETERS
o $var
- The variable being evaluated.
RETURN VALUES
Returns TRUE if $var is of type string, FALSE otherwise.
EXAMPLES
Example #1
is_string(3) example
<?php
$values = array(false, true, null, 'abc', '23', 23, '23.5', 23.5, '', ' ', '0', 0);
foreach ($values as $value) {
echo "is_string(";
var_export($value);
echo ") = ";
echo var_dump(is_string($value));
}
?>
The above example will output:
is_string(false) = bool(false)
is_string(true) = bool(false)
is_string(NULL) = bool(false)
is_string('abc') = bool(true)
is_string('23') = bool(true)
is_string(23) = bool(false)
is_string('23.5') = bool(true)
is_string(23.5) = bool(false)
is_string('') = bool(true)
is_string(' ') = bool(true)
is_string('0') = bool(true)
is_string(0) = bool(false)
SEE ALSO is_float(3), is_int(3), is_bool(3), is_object(3), is_array(3).
PHP Documentation Group IS_STRING(3)