02-13-2014
It is like a letter. You can replace it with "A" for example. The array is called "_".
This User Gave Thanks to Scrutinizer For This Post:
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi what is the purpose of using underscore in awk. I suppose it is for defining macro's and reducing repeatation but can some one show me an example? (6 Replies)
Discussion started by: ahmedwaseem2000
6 Replies
2. Shell Programming and Scripting
trying to remove the portion in red:
Data:
mds_ar/bin/uedw92wp.ksh: $AI_SQL/wkly.sql
mds_ar/bin/uedw92wp.ksh: $EDW_TMP/wkly.sql
output to be:
mds_ar/bin/uedw92wp.ksh: wkly.sql
mds_ar/bin/uedw92wp.ksh: wkly.sql
SED i'm trying to use:
sed 's/:+\//: /g' input_file.dat >... (11 Replies)
Discussion started by: danmauer
11 Replies
3. Shell Programming and Scripting
If I call my function with grouped options: "logm -TDIWEFO 'message' ", then only the "T" gets parsed correctly. The subsequent values returned have underscores prefixed to the value: "_D", "_I", etc. If I "logm -T -DIWEFO 'message' ", the "T" and the "D" are OK, but "I" through "O" get the... (2 Replies)
Discussion started by: kchriste
2 Replies
4. Shell Programming and Scripting
I must design a UNIX script to monitor files whose size is over a threshold of 5 MB in a specific UNIX directory
I meet a problem during the for loop in my script. Some file names contain spaces.
ls -lrt | awk '$5>=5000000 && length($8)==5 {gsub(/ /,"_",$9); print};'
-rw-r--r-- 1 was61 ... (2 Replies)
Discussion started by: Scofield38
2 Replies
5. Programming
why does this not work?
#include <stdio.h>
#include <stdlib.h>
char getFileMode(char charChanger) {
char filetype; /*var to hold the value to be returned*/
filetype = charSetter; /*set filetype to "l" if it is a symlink*/
return filetype;
}
int main(void){
char... (8 Replies)
Discussion started by: bluetxxth
8 Replies
6. Programming
When the STL generic algorithm's merge() function is used to merge two char arrays, the output is not as expected. Below is the program I tried with.
#include <iostream>
#include <algorithm>
#include <cstring>
#include <deque>
#include <iterator>
using namespace std;
int main() {
... (3 Replies)
Discussion started by: royalibrahim
3 Replies
7. Programming
As this function returns the address of the string corressponding to the errno value provided to it. Can someone please let me know where, in the memory, it could be (on freeBSD).
The MAN page tells under the BUG section that "For unknown error numbers, the strerror() function will return its... (5 Replies)
Discussion started by: Praveen_218
5 Replies
8. Shell Programming and Scripting
I am trying to split a tab-delimeted file using awk after the second _ in bold. The awk below is close but splits on the first _, and I am not sure how to use the second _. Thank you :).
file
chr1 92145889 92149424 NM_001195684_exon_0_10_chr1_92145900_r 0 -
chr1 92161218 ... (4 Replies)
Discussion started by: cmccabe
4 Replies
9. Shell Programming and Scripting
Hi,
I am having script which contains many functions. Need to print each function name at the starting of the function. Like below,
functionname()
{
echo "functionname"
commands....
}
I've tried like below,
func=`grep "()" scriptname | cut -d "(" -f1`
for i in $func
do
nawk -v... (4 Replies)
Discussion started by: Sumanthsv
4 Replies
10. Programming
I am passing a char* to the function "reverse" and when I execute it with gdb I get:
Program received signal SIGSEGV, Segmentation fault.
0x000000000040083b in reverse (s=0x400b2b "hello") at pointersExample.c:72
72 *q = *p;
Attached is the source code.
I do not understand why... (9 Replies)
Discussion started by: jose_spain
9 Replies
LEARN ABOUT PHP
substr_replace
SUBSTR_REPLACE(3) 1 SUBSTR_REPLACE(3)
substr_replace - Replace text within a portion of a string
SYNOPSIS
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)