Hi,
I have the below script executed
arg="dir"
if "$arg" = "dir"
then
echo "true"
else
echo "false"
fi
Please let me know what happens in the if command.
My output is:
dir: dir: No such file or directory
false
which is not the desired output.
When i used test command... (1 Reply)
Hi all
I am trying to scan a file that has 3 columns:
red blue 123351
red blue 848655
red blue 126354
red blue 023158
black white 654896
red blue 650884
I want an output that sums the rows that have matching columns 1 and 2 :wall:
red blue has 5 entries
black white has 1 entry
... (4 Replies)
Hi all
I have this script that i have written in some logging for but i do not want it to log for all option, i have used Getopt::Long 2.11 to allow differnt switches but i only want logging on one type of switch
this is my code but it does not like the ne (not equals)
i do not wnat the... (7 Replies)
How do I go about amending this simple script that prompts for a yes/no response so that if neither Y or N are entered it will loop back back to the original prompt
#!/bin/ksh
echo "Enter yes of no"
read answer
if
then
echo "You selected yes"
elif
then
echo "You selected no"
elif... (5 Replies)
Hi there can anyone help me please. I want to make a program to check if the executable file specified by the user exists in the directory.
When I run this program particulary these lines of code does not work:
if ("$fi" == "$name") then where It checks whether the specified file is equal to the... (1 Reply)
Hi,
I have a tab delimited text file where some lines have the string "NA" in the second column. For these lines, I want to replace NA with the value in the first column, the symbol underscore followed by the value in the fourth column. How do I go about doing that? Thanks!
Input:
1 ... (3 Replies)
Hello everyone,
I have a requirement as shown below. I need to delete consecutive same values from the source file and give it as output file.
Source:
a,b,c,d,e,e,f,g
Target:
a,b,c,d,f,g
The repeating value "e" should be deleted from the file completely. How can I achieve this... (14 Replies)
Hello,
I have compiled a script but I have stucked at one point.
Each line contains two pcs of % value and what I want to do is to delete any line if both % values are zero.
data:
expected output:
ow3 should be deleted as both percentage value in related line are equal to zero.
... (2 Replies)
Discussion started by: baris35
2 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)