Hi, buddies out there.
I have a text file ( only one column ) which I created using vi editor. The file contains duplicate rows and I would like to select distinct rows, how to go on it using unix command:
file content =
apple
apple
orange
watermelon
apple
orange
Can it be done... (7 Replies)
Hi,
I want to print certain fields from my data file depending on certain conditions. Somebody pls let me know how to send it to awk.
The command below is the one which I want to use in a shell script and this prints fine
cat ./datafile.dat | grep -i $SEARCH_STR | awk -F: '{ print $1 $2 $3... (5 Replies)
Hi ,
I have a similar problem.
Please can anyone help me with a shell script or a perl.
I have a flat file like this
fruit country
apple germany
apple india
banana pakistan
banana saudi
mango india
I want to get a output like
fruit country
apple ... (7 Replies)
I have . dat file which contains data in a specific format:
0 3 892 921 342
1 3 921 342 543
2 4 817 562 718 765
3 3 819 562 717 761
i need to compare each field in a row with another field of the same column but different row and cont the... (8 Replies)
I am a beginner to scripting, please help me in this regard.
How do I create a script that provides a count of distinct values of all the fields in the pipe delimited file ? I have 20 different files with multiple columns in each file. I needed to write a generic script where I give the number... (1 Reply)
I am a beginner to scripting, please help me in this regard.
How do I create a script that provides a count of distinct values of all the fields in the pipe delimited file ? I have 20 different files with multiple columns in each file. I needed to write a generic script where I give the number... (2 Replies)
If i have a log file record.txt, with 10 fields
- First field is datetime
- 7th field is status
- 8th filed is name
- The last field (10th) is epoch time of the first field
02/17/2012 1:47 PM||||||In Use|chicken||1329515230
02/17/2012 2:53 PM||||||Available|chicken||1329519195
02/17/2012... (4 Replies)
Hi, I have the following file:
LOG:015608::ERR:2310:map_spsrec:Invalid parameter
LOG:015608::ERR:2471:map_dgdrec:Invalid parameter
LOG:015608::ERR:2487:map_nnmrec:Invalid number
LOG:015608::ERR:2310:map_nmrec:Invalid number
LOG:015608::ERR:2438:map_nmrec:Invalid number
As a delimiter I... (2 Replies)
Hi All
I would like to modify a file like this:
>antax gioq21 tris notes
abcdefghij
klmnopqrs
>betax gion32 ter notes2
tuvzabcdef
ahgskslsooin this:
>tris
abcdefghij
klmnopqrs
>ter
tuvzabcdef
ahgskslsoo
So, I would like to remove the first two fields(and output field 3) in record... (4 Replies)
Hi
How can I extract sequences from a fasta file with respect a certain criteria? The beginning of my file (containing in total more than 1000 sequences) looks like this:
>H8V34IS02I59VP
SDACNDLTIALLQIAREVRVCNPTFSFRWHPQVKDEVMRECFDCIRQGLG
YPSMRNDPILIANCMNWHGHPLEEARQWVHQACMSPCPSTKHGFQPFRMA... (6 Replies)
Discussion started by: Marion MPI
6 Replies
LEARN ABOUT PHP
substr_replace
SUBSTR_REPLACE(3) 1 SUBSTR_REPLACE(3)substr_replace - Replace text within a portion of a stringSYNOPSIS
mixed substr_replace (mixed $string, mixed $replacement, mixed $start, [mixed $length])
DESCRIPTION substr_replace(3) replaces a copy of $string delimited by the $start and (optionally) $length parameters with the string given in $replace-
ment.
PARAMETERS
o $string
- The input string. An array of strings can be provided, in which case the replacements will occur on each string in turn. In
this case, the $replacement, $start and $length parameters may be provided either as scalar values to be applied to each input
string in turn, or as arrays, in which case the corresponding array element will be used for each input string.
o $replacement
- The replacement string.
o $start
- If $start is positive, the replacing will begin at the $start'th offset into $string. If $start is negative, the replacing will
begin at the $start'th character from the end of $string.
o $length
- If given and is positive, it represents the length of the portion of $string which is to be replaced. If it is negative, it rep-
resents the number of characters from the end of $string at which to stop replacing. If it is not given, then it will default to
strlen( $string ); i.e. end the replacing at the end of $string. Of course, if $length is zero then this function will have the
effect of inserting $replacement into $string at the given $start offset.
RETURN VALUES
The result string is returned. If $string is an array then array is returned.
EXAMPLES
Example #1
Simple substr_replace(3) examples
<?php
$var = 'ABCDEFGH:/MNRPQR/';
echo "Original: $var<hr />
";
/* These two examples replace all of $var with 'bob'. */
echo substr_replace($var, 'bob', 0) . "<br />
";
echo substr_replace($var, 'bob', 0, strlen($var)) . "<br />
";
/* Insert 'bob' right at the beginning of $var. */
echo substr_replace($var, 'bob', 0, 0) . "<br />
";
/* These next two replace 'MNRPQR' in $var with 'bob'. */
echo substr_replace($var, 'bob', 10, -1) . "<br />
";
echo substr_replace($var, 'bob', -7, -1) . "<br />
";
/* Delete 'MNRPQR' from $var. */
echo substr_replace($var, '', 10, -1) . "<br />
";
?>
Example #2
Using substr_replace(3) to replace multiple strings at once
<?php
$input = array('A: XXX', 'B: XXX', 'C: XXX');
// A simple case: replace XXX in each string with YYY.
echo implode('; ', substr_replace($input, 'YYY', 3, 3))."
";
// A more complicated case where each replacement is different.
$replace = array('AAA', 'BBB', 'CCC');
echo implode('; ', substr_replace($input, $replace, 3, 3))."
";
// Replace a different number of characters each time.
$length = array(1, 2, 3);
echo implode('; ', substr_replace($input, $replace, 3, $length))."
";
?>
The above example will output:
A: YYY; B: YYY; C: YYY
A: AAA; B: BBB; C: CCC
A: AAAXX; B: BBBX; C: CCC
NOTES
Note
This function is binary-safe.
SEE ALSO str_replace(3), substr(3), String access and modification by character.
PHP Documentation Group SUBSTR_REPLACE(3)