Hi
I am a beginner to sed command, here I have a question about using sed to add a few characters into a token of a string.
For example, I have a file,
sqw:qqq:123124:uiqe
dfd:ccc:12390:dfjis
cde:aaa:21311:dfjsid
and, I want the output to be,
sqw:qqq:123124:uiqe... (4 Replies)
I want to find duplicates in file on 2nd field i wrote this code:
nawk '{a++} END{for i in a {if (a>1) print}}' temp
Could not find whats wrong with this.
Appreciate help (5 Replies)
I want to sort alphabetically on the first field and sort in descending numerical order on the 2nd field. With a normal "sort -r -n" it does this:
abc ||| 5e-05 ||| bla
abc ||| 3 ||| ble
def ||| 1 ||| abc
def ||| 0.2 ||| def
As you can see it ignores the fact that 5e-05 is actually 0.00005... (1 Reply)
Hi Everyone,
($total+=$_) for @record;
assume @record=(1,2,3), so the result is 6.
if @record=("1 3","2 3","3 3"), would like to sum up the 2nd field of this array, the result is 9.
i tried " ($total+=$) for @record ", cannot, please advice.
Thanks
---------- Post updated at 03:45... (1 Reply)
Hi,
I've internally searched through forums for about 2+ hours. Unfortunately, with no luck. Although I've found some cases close to mine below, but didn't help so much.
Actually, I'm in short with time. So I had to post my case. Hoping that you can help.
I have 2 files,
FILE1
... (0 Replies)
Hi,
I've internally searched through forums for about 2+ hours. Unfortunately, with no luck. Although I've found some cases close to mine below, but didn't help so much.
Actually, I'm in short with time. So I had to post my case. Hoping that you can help.
I have 2 files,
FILE1
... (1 Reply)
java....4059... compsite 62u IPv4 170747 TCP *:9400 (LISTEN)
java...... 05... compsite 109u IPv4 171216 TCP *:9401 (LISTEN)
This is Joust formated like this
Please Repace "." with space" "
All are Right Justfied
Output :- 4058 and 05 so that i can kill this (1 Reply)
I have a requirement to replace "\" with "/" in only the 2nd field of the input file which has 2 fields. The field delimiter is "|"
Sample records from input file:
1\23|\tmp\user
mn\wer|\home\temp
Expected output:
1\23|/tmp/user
mn\wer|/home/temp
I used
sed 's/\\/\//g'
... (2 Replies)
Hi,
For example:
I have:
HostA,XYZ
HostB,XYZ
HostC,ABC
I would like the output to be:
HostA,HostB: XYZ
HostC:ABC
How can I achieve this?
So far what I though of is: (1 Reply)
Discussion started by: alvinoo
1 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)