I am writing my first shell script to do the following:
Find all occurrences of a directory from the pwd
Delete the directory (which is a hidden directory)
Provide feedback w/ the number of directories deleted
The problems I am having are two-fold:
The user may not have the appropriate... (2 Replies)
Hi
Could anybody tell me how to count the number of occurances of a character within a LINE.
actually i have a single line with words seperated with '+' chracter e.g.
abc+def+ghj+jkl+asd
i want to separte the words above.
Please provide the necessary logic in the form of a SHELL... (6 Replies)
Hi,
I have a fixed width file in the following format
Sr.No A.No Name
1 2 PPP
3 4 PPP
5 6 TTT
7 8 OOO
9 10 OOO
11 12 OOO
The 3rd column starts at position 10 and ends at 15. I want to count the number of occurances of each Name and output to a file
Example in the... (2 Replies)
Hi,
Is there any way to merge two lines based on specific occurance of a character in a file.
I am having a flat file which contains multiple records.
Each row in the file should contain specified number of delimiter.
For a particular row , if the delimiter count is not matched with... (2 Replies)
Hi. I need to count multiple occurrences of X Y Z in a file in 1 go. At the moment I have the following scripts:
ssh readonly@$ServerIP 'YEAR=xx;DAY=xx;MONTH=xx;LMONTH=xx;for i in 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 \
16 17 18 19 20 21 22 23; do cat... (13 Replies)
Gurus,
Need little guidance.
I have A.txt and B.txt file. B.txt file contains Unique strings.
Sample content of B.txt file for which i cut the fourth column uniquely and output directed to B.txt file
And A.txt file contains the above string as a fourth column which is last column.
So A.txt... (7 Replies)
Hi all,
Greetings,
I have the following scenario, The contents of main file are like :
Unix|||||forum|||||||||||||||is||||||the||best
so||||||be|||||on||||||||||||||||||||||||||||||||||||||||||||it
And i need the output in the following form:
Unix=forum=is=the=best
so=be=on=it
... (3 Replies)
Hi all,
I am very new to unix - ksh. I want to replace some characters in a file with some other, but only for first three occurances for each line.
For eg:
the first 3 occurances character ']' has to be replaced with ',' in each line.
Please help.
thanks
Sreejith (1 Reply)
I have a file as shown below. I need to count the unique occurrences of numbers in the first and second column only if the third column is <= 10. Otherwise print the corresponding numbers as zero.
Thanks in advance!:)
58 80 40.74
76 80 9.78
76 80 8
12 6 9
30 28 8.23
45 12 ... (13 Replies)
Guys
I am trying grep to read from pattern file and count occurances of each word.
input is
firstplace
secondplace
secondpot
patternfile is
place
first
second
i want the following.
1-count number of times keywords in patternfile occurs in begining of each line in input file.
so... (12 Replies)
Discussion started by: ahfze
12 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)