awk '
NR==FNR {SP=SP DL $1
DL = "|"
next
}
match ($0, SP) {T = $0
gsub (/./, "I", T)
T = substr (T, 1, RSTART-2) (RSTART>1?"E":"") substr (T, RSTART, RLENGTH) (RSTART+RLENGTH<length?"B":"") substr (T, RSTART+RLENGTH+1)
T = $0 "\t" T
$0 = ""
for (i=1; i<=length(T); i++) $0 = $0 substr (T, i, 1) " "
}
1
' root_words.txt affix_words.txt
r e a d i n g I I I I B I I
u n l i k e l y I E I I I I B I
Hi,
i have a line
tftp dgram udp wait nobody /usr/sbin/tcpd in.tftpd /tftpboott
in /etc/inet.conf file. ineed to replace nobody with root and /tftpboott with /flx/boot. i tried using sed ,but i could not change both of them. can you please help me to do this.
Edit:... (7 Replies)
Hi,
I have a file content like:
:
:
<span class="ColorRed"> 1.23</span><br>
:
:
the value 1.23 will be changed from time to time, and I want to use a shell script command, e.g grep or sed, to retrieve only the value, how to do it?
Thanks!
Victor (6 Replies)
Hello everybody,
I have some files in directory. I want to shift 3 characters of filenames to the right at a same time.
for example, I have filenames like $ls -l
01_2000.G3.input.txt
02_2000.G3.input.txt
...,
...,
04_2010.G3.input.txt
I want to change the filenames like... (3 Replies)
echo apple orange
What command would I use to grab the common letters out of both words?
output would be
a and e are both common in these 2 words!
Please no ruby explanations and please no full answers I just need to know how to get started!
Could I sed out a and if the variable =aa... (3 Replies)
hello,
i 'd like your help about a bash script which:
1. finds inside the html file (it is attached with my post) the code number of the Latest Stable Kernel,
2.finds the link which leads to the download location of the Latest Stable Kernel version,
(the right link should lead to the file... (3 Replies)
Hi
I want to write a shell script to print only those words from a file whose beginning
and last character are same.
Please help.
Thanks,
vini (5 Replies)
I need a shell programing script for "double words"
Available Data:
This is a shell script that is used to find the ten character words in the machine local
dictionary (/usr/dict/words) that are made up with two valid english words that are
five character long. This means that each of the... (0 Replies)
Hello,
I have output like below:
-----------------------------------------------------------------------------
Group 'group1' on system 'system01' is running.
-----------------------------------------------------------------------------
Group 'group2' on system 'system01' is running.... (4 Replies)
Hi :)
I have a .txt file with thousands of words.
I was wondering if i could use a simple sed or awk command to convert / replace all words in the text file to Title Case format ?
Example:
from:
this is line one
this is line two
this is line three
to desired output:
This Is Line... (8 Replies)
Hello All,
I have python script that pulls out a keyword from the data set. The data set contains 3 columns,
1. SysID 2. ID 3. Comment Section.
This script just pulls out keyword for certain extent from Comment section and display only keyword, not any other columns.
Can someone help... (1 Reply)
Discussion started by: jg355187
1 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)