Hi,
I have files that are named front1.txt to front999.txt. They are all in the same directory. To change "front" to "back", I am doing something like this.
for file in *.txt; do
new=`echo $file | sed 's/^**/back/g'`
mv $file $new
done
My problem is what if files are named... (6 Replies)
I have a csv file in which there are numbers like
078976/9XXX
098754/8XXX
I want to replace the XXX with null. I want to know the command/code to do this.
I know how to replace the whole word/number. But don't know how to replace a part of it.
Thanks in advance,
Mihir (3 Replies)
Can anyone help me how I will extract all lines in a file where the word "worker" or "co-worker" in 2nd column exist. There are also word in 2nd column like "workers" or "worker2" but I don't want to display those lines.
Appreciate any help in advance! Thank you! (5 Replies)
Our email address is changing and I need to update 4000 htm pages.
I was told I command was something like this
Eg)
find docs/700_799/ -name "*.htm" -type f | xargs perl -pi -e 's/\/company-information\/legal-and-regulatory/\/legal-and-regulatory/g'
Is there away of not changing the date... (1 Reply)
Hi all,
FileOne
family balance >>>>>
0 0
0 0
java.io.FileNotFoundException: Settings.xml (No such file or directory)
at java.io.FileInputStream.open(Native Method)
..
....
.....
.....
java.lang.NullPointerException
...
.....
......
Stacktrace:
at... (2 Replies)
Hi
I need to Replace a part of string in between one complete string.
For e.g..
in the file the value is as:
jobnm_$code_xyz_001
In script we are having a variable code=$3, where $3=ab
final output should be jobnm_ab_xyz_001.
But it is not working. Your help will be... (1 Reply)
Hi All,
I have a file in which a number of lines are starting with similar first word but different next words.
I want to replace the any nth word(not 1st or 2nd) with another word.
Eg:- My file contains are like this:-
Ram is a boy.
Ram is a good boy.
Ram plays cricket.
Here I want to... (2 Replies)
Hello there,
I need some help.
I have a file containing this :
$ cat file
PARM1=(VAL11),PARM2=(VAL21,VAL22,VAL23),PARM3=(VAL31),PARM4=(VAL41,VAL42)
and I need to replace all the ',' by '|' but only those which are between brackets.
Output would be :... (10 Replies)
Hi Gurus,
I need to replace part of string in file, the string format is below: I can use ABCD to find string, then replace values after "=" sign
ABCD_XXX=value
ABCD_YYY=value
after replace
ABCD_XXX=new_value
ABCD_YYY=new_value
my OS is SunOS 5.10 Generic_150400-64 sun4v sparc sun4v
... (9 Replies)
Discussion started by: green_k
9 Replies
LEARN ABOUT PHP
levenshtein
LEVENSHTEIN(3) 1 LEVENSHTEIN(3)levenshtein - Calculate Levenshtein distance between two stringsSYNOPSIS
int levenshtein (string $str1, string $str2)
DESCRIPTION
int levenshtein (string $str1, string $str2, int $cost_ins, int $cost_rep, int $cost_del)
The Levenshtein distance is defined as the minimal number of characters you have to replace, insert or delete to transform $str1 into
$str2. The complexity of the algorithm is O(m*n), where n and m are the length of $str1 and $str2 (rather good when compared to simi-
lar_text(3), which is O(max(n,m)**3), but still expensive).
In its simplest form the function will take only the two strings as parameter and will calculate just the number of insert, replace and
delete operations needed to transform $str1 into $str2.
A second variant will take three additional parameters that define the cost of insert, replace and delete operations. This is more general
and adaptive than variant one, but not as efficient.
PARAMETERS
o $str1
- One of the strings being evaluated for Levenshtein distance.
o $str2
- One of the strings being evaluated for Levenshtein distance.
o $cost_ins
- Defines the cost of insertion.
o $cost_rep
- Defines the cost of replacement.
o $cost_del
- Defines the cost of deletion.
RETURN VALUES
This function returns the Levenshtein-Distance between the two argument strings or -1, if one of the argument strings is longer than the
limit of 255 characters.
EXAMPLES
Example #1
levenshtein(3) example
<?php
// input misspelled word
$input = 'carrrot';
// array of words to check against
$words = array('apple','pineapple','banana','orange',
'radish','carrot','pea','bean','potato');
// no shortest distance found, yet
$shortest = -1;
// loop through words to find the closest
foreach ($words as $word) {
// calculate the distance between the input word,
// and the current word
$lev = levenshtein($input, $word);
// check for an exact match
if ($lev == 0) {
// closest word is this one (exact match)
$closest = $word;
$shortest = 0;
// break out of the loop; we've found an exact match
break;
}
// if this distance is less than the next found shortest
// distance, OR if a next shortest word has not yet been found
if ($lev <= $shortest || $shortest < 0) {
// set the closest match, and shortest distance
$closest = $word;
$shortest = $lev;
}
}
echo "Input word: $input
";
if ($shortest == 0) {
echo "Exact match found: $closest
";
} else {
echo "Did you mean: $closest?
";
}
?>
The above example will output:
Input word: carrrot
Did you mean: carrot?
SEE ALSO soundex(3), similar_text(3), metaphone(3).
PHP Documentation Group LEVENSHTEIN(3)