Is it possible to code a FOR loop within Bourne/Korn shell of the form:
for i in somelist AND j in anotherlist
do
echo $i $j
done
Basically I have two "lists", say:
listA= "1 2 3 4 5"
listB= "a b c d e"
I want to step through these lists simultaneously and with one echo... (9 Replies)
Hi all,
I am using getops to get the arguments passed by the command line.
However, I need to specify some rules regarding the parameter sent.
For eg:
I have script called MyScript which accept parameter d, I, E, r, u
so the usage should be like this:
MyScript
So far, I finished... (2 Replies)
My goal is simply to output a listing of all files in a directory and all subdirectories, one per line, ****with their full path****.
The *** part is what I can't figure out. I can get one on a line and I like having the extra info, so I'm using ls -Rl right now.
But what I get is just the... (2 Replies)
I want to print:
WELCOME TO MY WORLD
Where "WELCOME TO MY WORLD" will be in green (32) and the underline will be in yellow (33). How can i do the above using printf.
printf "`tput smul`\033
leaves both the text and the underline in green. (3 Replies)
Simple question , what good book is next step in learning C.
I finished with K&R and I want to go to the next step , so if someone has a good book please share title :D
I looked for Advanced C programming by example but it is too expansive 400$ on Amazon :(
So please tell me (7 Replies)
Hi All, I am trying to download large no of data using wget. the URLS are saved in a file. I want to want for a few seconds after every URL is downloaded so i saw the option -w with wget but it does not seem to work. Can any one give me a working usage. wget -i ../file1t -o ../Outlog.log -N -S... (2 Replies)
Hi!
I have a difficult problem, to step up a unknown version number in a text file, and save the file. It would be great to run script.sh and the version gets increased.
Example the content of the textfile.txt
hello
version = x
bye
This include three steps
1. First find the char after... (2 Replies)
Discussion started by: Beachboy72
2 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)