[Perl] Accessing array elements within a sed command in Perl script
I am trying to use a script to replace the header of each file, whose filename are stored within the array $test, using the sed command within a Perl script as follows:
This script doesn't work as is and I think it might be something with the syntax of how to call the element of an array within a embedded sed command. If I put an actual integer as the array index instead of the variable $count, it works fine, but if I try to use $count, it doesn't work at all. I know this might not be the most efficient method, but it is the only way I can think of with my limited knowledge of perl scripting.
Hello,
I have a comma delimited input feed file. The first field has directory location and the second field has file name.
Ex of input feed:
/export/appl/a,abc*.dat
/export/appl/b,xyz*.dat
/export/appl/c,pmn*.dat
Under each directory, there would be many files like...
.
.
.... (4 Replies)
How do I access one of the indices in array tst with the code below?
tst=sprintf("%5.2f",Car / 12)
When I scan thru the array with
for ( i in tst ) { print i,tst }
I get the output of:
vec-7 144
But when I try this in the END
print tst
It looks like it's not set.
What am... (6 Replies)
Hi,
My doubt is how to access array elements..
Situation is as below:
#!/bin/ksh
set -x
typeset -i x=0
typeset -i y=0
typeset -i BID=0
typeset -i count=0
while ] ; do
x=`expr $x + 1`;
hwmgr show scsi > scsi.tmp
while read line; do
set... (1 Reply)
I need to use array elements while pattern matching.
@myarr = (ELEM1, ELEM2, ELEM3);
following is the statement which I am using in my code. Basically I want to replace the ELEM1/2/3 with other thing which is mentioned as REPL here.
if (condition) {
s/(ELEM1|ELEM2|ELEM3): REPL: /;
}
I... (3 Replies)
What is wrong with this line in a perl script?
$amc_data = `sed -n '/\/,/\/p' "$config_file"`
I ran the above from command line and it works fine from unix command prompt.
The code should produce output between the and tags.
The config_file is as follows:
Sun ... (2 Replies)
Hello,
I have the following perl array:
@longname = (Fasthernet0/0 Fasthernet0/1 Serial0/1/0 Serial0/2/1 Tunnel55 Tunnel77)
with the followinh array:
@shortname = (Fa0/0 Fa0/1 Se0/1/0 Se0/2/1 Tu55 Tu77)
in other words, I need to remove the following from each element in the array... (4 Replies)
Hi all,
I can’t resolve an array element access issue on (Linux/pdksh) .. So I’m positing for advice.By the way - a friend demonstrated to me - same script works as expected under Solaris.
I have been working on a documentation project where many *.jpg screen shots are used in the... (4 Replies)
Hi all,
Not sure if this should be in the programming forum, but I believe it will get more response under the Shell Programming and Scripting FORUM.
Am trying to write a customized df script in Perl and need some help with regards to using arrays and file handlers.
At the moment am... (3 Replies)
Experts,
I am looking to compare elements of 2 array using perl. Below is not the actual code but logic wise something like this.
my $version = "MYSQlcl-5.2.4-264.x86_64"; <-- split this word into array as (5 2 4 264) ( which is to extract only the version number from the package name)
my... (1 Reply)
Hi
I am trying to store the output of a command into an array in perl script.
I am able to store but the problem is i am unable to print the array line with one line space. i mean i inserted the \n in loop ...but not getting the result.
I have written like this
#!/usr/bin/perl
@a =... (2 Replies)
Discussion started by: kumar85shiv
2 Replies
LEARN ABOUT PHP
count
COUNT(3) 1 COUNT(3)count - Count all elements in an array, or something in an objectSYNOPSIS
int count (mixed $array_or_countable, [int $mode = COUNT_NORMAL])
DESCRIPTION
Counts all elements in an array, or something in an object.
For objects, if you have SPL installed, you can hook into count(3) by implementing interface Countable. The interface has exactly one
method, Countable::count, which returns the return value for the count(3) function.
Please see the Array section of the manual for a detailed explanation of how arrays are implemented and used in PHP.
PARAMETERS
o $array_or_countable
- An array or Countable object.
o $mode
- If the optional $mode parameter is set to COUNT_RECURSIVE (or 1), count(3) will recursively count the array. This is particu-
larly useful for counting all the elements of a multidimensional array.
Caution
count(3) can detect recursion to avoid an infinite loop, but will emit an E_WARNING every time it does (in case the array
contains itself more than once) and return a count higher than may be expected.
RETURN VALUES
Returns the number of elements in $array_or_countable. If the parameter is not an array or not an object with implemented Countable inter-
face, 1 will be returned. There is one exception, if $array_or_countable is NULL, 0 will be returned.
Caution
count(3) may return 0 for a variable that isn't set, but it may also return 0 for a variable that has been initialized with an empty
array. Use isset(3) to test if a variable is set.
EXAMPLES
Example #1
count(3) example
<?php
$a[0] = 1;
$a[1] = 3;
$a[2] = 5;
$result = count($a);
// $result == 3
$b[0] = 7;
$b[5] = 9;
$b[10] = 11;
$result = count($b);
// $result == 3
$result = count(null);
// $result == 0
$result = count(false);
// $result == 1
?>
Example #2
Recursive count(3) example
<?php
$food = array('fruits' => array('orange', 'banana', 'apple'),
'veggie' => array('carrot', 'collard', 'pea'));
// recursive count
echo count($food, COUNT_RECURSIVE); // output 8
// normal count
echo count($food); // output 2
?>
SEE ALSO is_array(3), isset(3), strlen(3).
PHP Documentation Group COUNT(3)