Gurus,
I am struggling with a issue and thought I could use some of your expertise.
Need Help with this
I have a flat file that has millions of records
24|john|account ~ info |56|
25|kuo|account ~ journal |58|
27|kim|account ~ journal |59|
28|San|account ~
journal |60|... (3 Replies)
Hi Friends,
Need some help in AWK.
Working on AIX 5
Have been trying the following functionality to make the record length fixed:
if( length(record) < 300 )
{
printf("%-300s\n", record);
}
In my opinion it will apply some fillers in the end.
Its is not making any... (4 Replies)
Well I got ZFS going almost in version one and didn't have the money to raid it or mirror it. I run off of 7 - 750GB-1TB USB drives and it's run great for over a year. Recently I needed to power off and move some stuff around and when I powered it back on I got this:... (3 Replies)
i have a log file while looks like this
++
user_a blabla
blabla nas_b blabla user_d
this is a user_a
junk line
another junk line
user_c nas_m blabla
++
basically most of the lines contain a "user" keywords, and the rest of the lines do not have "user" at all.
So I have the... (17 Replies)
Hi
I use the following code to read the file and to fix the length of the column of the record in the file 'Sample.txt'
ls Samp* | awk '
{ a=$1 }
END{
FS="n"
for(i=1;i<=NR;i++)
{
while( getline < a )
{
f1=$0;
print("Line::",f1);
f2=substr(f1,1,10)
print("Field1::",f2);... (10 Replies)
Hi
I am dealing with the following string:
Date: Thur, 13 March 2011 01:01:10 +0000
I asked for help in another topic that converted a similar string:
Date: Thur, 13 March 2011 9:50 AM
To a 24 hr standard. The problem is that it comes out as:
Date: Thur, 13 March 2011 9:50:00 +0000... (4 Replies)
Good morning, fellows. I would need to ask for your help in editing my awk script. Here is the original version:
BEGIN { printf ("CRYST1 200.000 200.000 200.000 90.00 90.00 90.00 P 1 1\n")
maxatoms=1000
natom=0
found_struct = 0
found_bond = 0
}
{
if( NF == 5 )
{
foundff=0
natom++... (9 Replies)
Can you help me to fix my error please?! I checked the code and I think there is no mistake, but when I run it gives me error such
line 1: /Users/Manu/trials/hosts: is a directory
sort: open failed: /Users/Manu/trials/hosts/*: No such file or directory
Help me please...
mycode NAME value.... (9 Replies)
Hi All,
I have problem in the middle of implementing to users, whereby the complaint is all about the decimal place which is too long. I need two decimal places only, but the outcome from command is always fixed to 6.
See the sample :
before:
Sort Total
Site Sort SortName Parts ... (3 Replies)
Hi all...
i have been trying to make this work but I have been failing for 6 hours ..
I know it should be something simple that I am missing to it would be great if you can help me ...
I want to subtract a fixed value (lets set 1) from any value >=1 from the whole file
my file looks like
... (4 Replies)
Discussion started by: A-V
4 Replies
LEARN ABOUT PHP
substr
SUBSTR(3) 1 SUBSTR(3)substr - Return part of a stringSYNOPSIS
string substr (string $string, int $start, [int $length])
DESCRIPTION
Returns the portion of $string specified by the $start and $length parameters.
PARAMETERS
o $string
- The input string. Must be one character or longer.
o $start
- If $start is non-negative, the returned string will start at the $start'th position in $string, counting from zero. For
instance, in the string ' abcdef', the character at position 0 is ' a', the character at position 2 is ' c', and so forth. If
$start is negative, the returned string will start at the $start'th character from the end of $string. If $string is less than or
equal to $start characters long, FALSE will be returned.
Example #1
Using a negative $start
<?php
$rest = substr("abcdef", -1); // returns "f"
$rest = substr("abcdef", -2); // returns "ef"
$rest = substr("abcdef", -3, 1); // returns "d"
?>
o $length
- If $length is given and is positive, the string returned will contain at most $length characters beginning from $start (depend-
ing on the length of $string). If $length is given and is negative, then that many characters will be omitted from the end of
$string (after the start position has been calculated when a $start is negative). If $start denotes the position of this trunca-
tion or beyond, false will be returned. If $length is given and is 0, FALSE or NULL, an empty string will be returned. If
$length is omitted, the substring starting from $start until the end of the string will be returned.
Example #2
Using a negative $length
<?php
$rest = substr("abcdef", 0, -1); // returns "abcde"
$rest = substr("abcdef", 2, -1); // returns "cde"
$rest = substr("abcdef", 4, -4); // returns false
$rest = substr("abcdef", -3, -1); // returns "de"
?>
RETURN VALUES
Returns the extracted part of $string; or FALSE on failure, or an empty string.
CHANGELOG
+--------------+---------------------------------------------------+
| Version | |
| | |
| | Description |
| | |
+--------------+---------------------------------------------------+
|5.2.2 - 5.2.6 | |
| | |
| | If the $start parameter indicates the position |
| | of a negative truncation or beyond, false is |
| | returned. Other versions get the string from |
| | start. |
| | |
+--------------+---------------------------------------------------+
EXAMPLES
Example #3
Basic substr(3) usage
<?php
echo substr('abcdef', 1); // bcdef
echo substr('abcdef', 1, 3); // bcd
echo substr('abcdef', 0, 4); // abcd
echo substr('abcdef', 0, 8); // abcdef
echo substr('abcdef', -1, 1); // f
// Accessing single characters in a string
// can also be achieved using "square brackets"
$string = 'abcdef';
echo $string[0]; // a
echo $string[3]; // d
echo $string[strlen($string)-1]; // f
?>
Example #4
substr(3) casting behaviour
<?php
class apple {
public function __toString() {
return "green";
}
}
echo "1) ".var_export(substr("pear", 0, 2), true).PHP_EOL;
echo "2) ".var_export(substr(54321, 0, 2), true).PHP_EOL;
echo "3) ".var_export(substr(new apple(), 0, 2), true).PHP_EOL;
echo "4) ".var_export(substr(true, 0, 1), true).PHP_EOL;
echo "5) ".var_export(substr(false, 0, 1), true).PHP_EOL;
echo "6) ".var_export(substr("", 0, 1), true).PHP_EOL;
echo "7) ".var_export(substr(1.2e3, 0, 4), true).PHP_EOL;
?>
The above example will output:
1) 'pe'
2) '54'
3) 'gr'
4) '1'
5) false
6) false
7) '1200'
ERRORS /EXCEPTIONS
Returns FALSE on error.
Example #5
<?php
var_dump(substr('a', 1)); // bool(false)
?>
SEE ALSO strrchr(3), substr_replace(3), preg_match(3), trim(3), mb_substr(3), wordwrap(3), String access and modification by character.
PHP Documentation Group SUBSTR(3)