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Top Forums Shell Programming and Scripting sed is not overwriting a file Post 302935379 by Priya Amaresh on Monday 16th of February 2015 05:33:15 AM
Old 02-16-2015
sed is not overwriting a file

hi

i have a file as in follwoing:

Code:
cat apple.txt
Apple is a fruit
But this fruit is costly

Now I used the sed command and i see output as in following

Code:
[root@2 ~]# sed 's/fruit/healthy &/'  fruit.txt
Apple is a healthy fruit
But this healthy fruit is costly
[root@2 ~]#

sed works fine here. But when I cat "fruit.txt" i dont see the file overwritten by the changes done by sed command. I see only old file which was existing
Code:
[root@2 ~]# sed 's/fruit/healthy &/'  fruit.txt
Apple is a healthy fruit
But this healthy fruit is costly
[root@2 ~]# cat fruit.txt
Apple is a fruit
But this fruit is costly
[root@2 ~]#

Please help Smilie
 

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LIMITITERATOR(3)							 1							  LIMITITERATOR(3)

The LimitIterator class

INTRODUCTION
The LimitIterator class allows iteration over a limited subset of items in an Iterator. CLASS SYNOPSIS
LimitIterator LimitIteratorextends IteratorIteratorOuterIterator Methods o public LimitIterator::__construct (Iterator $iterator, [int $offset], [int $count = -1]) o public mixed LimitIterator::current (void ) o public Iterator LimitIterator::getInnerIterator (void ) o public int LimitIterator::getPosition (void ) o public mixed LimitIterator::key (void ) o public void LimitIterator::next (void ) o public void LimitIterator::rewind (void ) o public int LimitIterator::seek (int $position) o public bool LimitIterator::valid (void ) EXAMPLES
Example #1 LimitIterator usage example <?php // Create an iterator to be limited $fruits = new ArrayIterator(array( 'apple', 'banana', 'cherry', 'damson', 'elderberry' )); // Loop over first three fruits only foreach (new LimitIterator($fruits, 0, 3) as $fruit) { var_dump($fruit); } echo " "; // Loop from third fruit until the end // Note: offset starts from zero for apple foreach (new LimitIterator($fruits, 2) as $fruit) { var_dump($fruit); } ?> The above example will output: string(5) "apple" string(6) "banana" string(6) "cherry" string(6) "cherry" string(6) "damson" string(10) "elderberry" PHP Documentation Group LIMITITERATOR(3)
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