10-28-2019
You can't have a delimiter occurring in your data. Use either a diffenrent delimiter (e.g. <TAB> = \t = 0x09), or an array.
This User Gave Thanks to RudiC For This Post:
9 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi all,
I have a file with single white space delimited values, I want to convert them to a tab delimited file.
I tried sed, tr ... but nothing is working.
Thanks,
Rajeevan D (16 Replies)
Discussion started by: jeevs81
16 Replies
2. UNIX for Dummies Questions & Answers
Greetings
So glad I found this forum!
I need to get a list of users in a variable so I can use "for" to iterate through them in a bash script.
I know this does not work, but I need to do something like this:
myusers=(cat /etc/passwd | cut -f1 -d )
for myuser in $myusers
do
... (2 Replies)
Discussion started by: holocene
2 Replies
3. UNIX for Dummies Questions & Answers
So I have three space delimited files. Each have 90 rows and many columns. I want to merge them by columns. I use paste to merge file 1 and file2 or file 3 and it works. But when I try to merge file 2 and file 3 using paste or merge or cat, I cannot merge them by column, instead they are merged by... (11 Replies)
Discussion started by: evelibertine
11 Replies
4. Shell Programming and Scripting
Hi All,
I have space delimited file similar to the one as shown below.. I need to convert it as a pipe delimited, the values inside the pipe delimited file should be as highlighted...
AA ATIU2345098809 009697 005374
BB ATIU2345097809 005445 006518
CC ATIU9685098809 003215 003571
DD... (7 Replies)
Discussion started by: nithins007
7 Replies
5. UNIX for Dummies Questions & Answers
Hi,
I have a space delimited text file but I only want to change the first space to a tab and keep the rest of the spaces intact. How do I go about doing that? Thanks! (3 Replies)
Discussion started by: evelibertine
3 Replies
6. UNIX for Dummies Questions & Answers
Hi,
How do I transpose a huge space delimited file with more than 2 million columns and about 100 rows? Thanks! (10 Replies)
Discussion started by: evelibertine
10 Replies
7. Shell Programming and Scripting
Hi How to make tab delimited file to space delimited?
in put file:
ABC kgy
jkh ghj
ash kjl
o/p file:
ABC kgy
jkh ghj
ash kjl
Use code tags, thanks. (1 Reply)
Discussion started by: jagdishrout
1 Replies
8. Shell Programming and Scripting
hi,
i need a portion in a audit logging shell script where i have to loop thru multiple variables.
I need some help in accomplishing this. i have 3 variables
var1=1,23,234
var2=a,ab,xyz
var3=0,0,0
the variables will have variables number of values but same length.(3 in this case )
i... (10 Replies)
Discussion started by: rock1
10 Replies
9. Shell Programming and Scripting
Hi,
I am wanting to create a script that will construct a SQL statement based on a a space delimited string that it read from a config file.
Example of the SQL will be
For example, it will read a string like "AAA BBB CCC" and assign to a variable named IN_STRING.
I then concatenate... (2 Replies)
Discussion started by: newbie_01
2 Replies
EMPTY(3) 1 EMPTY(3)
empty - Determine whether a variable is empty
SYNOPSIS
bool empty (mixed $var)
DESCRIPTION
Determine whether a variable is considered to be empty. A variable is considered empty if it does not exist or if its value equals FALSE.
empty(3) does not generate a warning if the variable does not exist.
PARAMETERS
o $var
- Variable to be checked
Note
Prior to PHP 5.5, empty(3) only supports variables; anything else will result in a parse error. In other words, the follow-
ing will not work: empty(trim($name)). Instead, use trim($name) == false.
No warning is generated if the variable does not exist. That means empty(3) is essentially the concise equivalent to !isset($var)
|| $var == false.
RETURN VALUES
Returns FALSE if $var exists and has a non-empty, non-zero value. Otherwise returns TRUE.
The following things are considered to be empty:
o "" (an empty string)
o 0 (0 as an integer)
o 0.0 (0 as a float)
o "0" (0 as a string)
o NULL
o FALSE
o array() (an empty array)
o $var; (a variable declared, but without a value)
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.5.0 | |
| | |
| | empty(3) now supports expressions, rather than |
| | only variables. |
| | |
| 5.4.0 | |
| | |
| | Checking non-numeric offsets of strings returns |
| | TRUE. |
| | |
+--------+---------------------------------------------------+
EXAMPLES
Example #1
A simple empty(3) / isset(3) comparison.
<?php
$var = 0;
// Evaluates to true because $var is empty
if (empty($var)) {
echo '$var is either 0, empty, or not set at all';
}
// Evaluates as true because $var is set
if (isset($var)) {
echo '$var is set even though it is empty';
}
?>
Example #2
empty(3) on String Offsets
PHP 5.4 changes how empty(3) behaves when passed string offsets.
<?php
$expected_array_got_string = 'somestring';
var_dump(empty($expected_array_got_string['some_key']));
var_dump(empty($expected_array_got_string[0]));
var_dump(empty($expected_array_got_string['0']));
var_dump(empty($expected_array_got_string[0.5]));
var_dump(empty($expected_array_got_string['0.5']));
var_dump(empty($expected_array_got_string['0 Mostel']));
?>
Output of the above example in PHP 5.3:
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
bool(false)
Output of the above example in PHP 5.4:
bool(true)
bool(false)
bool(false)
bool(false)
bool(true)
bool(true)
NOTES
Note
Because this is a language construct and not a function, it cannot be called using variable functions.
Note
When using empty(3) on inaccessible object properties, the __isset() overloading method will be called, if declared.
SEE ALSO
isset(3), __isset(), unset(3), array_key_exists(3), count(3), strlen(3), The type comparison tables.
PHP Documentation Group EMPTY(3)