Howdy folks,
I'm trying to craft a log file summarisation tool for an application that creates a lot of duplicate entries with only a different suffix to indicate point of execution. I thought I'd gotten close but I'm clearly missing something.
Here's a genericized version:
A text_file (infile_grocery.txt) with these contents.
What I'm hoping to get is:
The command line I've cooked up is:
But the results I'm getting are:
Clearly I'm skipping chunks of lines somehow but I've been staring at this too long and I can't see it. Anyone have any suggestions for me?
Seems simple but I am having difficulty with this one: I am trying to write a single command line argument (which will be a path) - the program should print out the owner of the path.
I can not get anything I write to run.
Please help. (5 Replies)
hi all,
i am just getting in to bash scripting, so don't be too harsh...
i've created this little backup script, and it's just awfull... ugly, doesn't work like I want it to, the works. anyways, i was hoping some of you might help me improve it and learn a little in the process.
what i... (13 Replies)
I need to write two shell scripts for an rsync backup solution. The first script will copy all backed up files into a folder named after the original folder, plus a date stamp (so e.g. if the original folder name is 'foo' and is backed up on the 10th of September, then the backup folder will be... (0 Replies)
PFA file "color.txt".
Note : There is no newline character in the file. I have manually inserted the newline char to make it easy to understand.
I am expecting out in the form as specified in second file "out.txt"
I need a perl script to perform the task.
Thanks in advance. (2 Replies)
Hi All,
I need your assistance, I would like to replace all lines beginning with the word "begin" with the below text:
Device | IPMB0-A | IPMB0-B
Board Address |Sent SentErr %Errr |Sent SentErr ... (9 Replies)
Hi All,
I need your assistance, I would like to replace all lines beginning with the word "begin" with the below text:
Device | IPMB0-A | IPMB0-B
Board Address |Sent SentErr %Errr |Sent SentErr ... (10 Replies)
I am using ii for irc on my pogoplug...
hxxp://hg.suckless.org/ii/file/d163c8917af7/FAQ
If you look at the bottom of there, it states
31 What other fancy stuff can I do with ii?
32 ----------------------------------------
33 It is very easy to write irc bots in ii:
34... (3 Replies)
Hello everyone! I am brand new at this forum thing and wanted to thank all of you for your time and help in advance for helping me troubleshoot my issue.
I am fairly new to shell scripting and scoured the entire internet to find a solution for my issue to no avail and hope you're able to help.
... (2 Replies)
Hello,
I am in a Unix class and have been out of town. I have been tasked to generate a couple of scripts and ahve never done it before. I have a virtual machine running Ubuntu. The task is below
Prompt the system administrator for all valid input parameters
Generate a menu to ask which... (1 Reply)
Hello everyone.
I am trying to replace
sprintf(buffer, "{\"id\":1,\"method\":\"mining.update_block\",\"params\":}\n", coinid, blockhash);
with
sprintf(buffer, "{\"id\":1,\"method\":\"mining.update_block\",\"params\":}\n", coinid, blockhash);
this is the code I was trying but is... (9 Replies)
Discussion started by: crombiecrunch
9 Replies
LEARN ABOUT PHP
array_walk
ARRAY_WALK(3) 1 ARRAY_WALK(3)array_walk - Apply a user supplied function to every member of an arraySYNOPSIS
bool array_walk NULL (array &$array, callable $callback, [mixed $userdata])
DESCRIPTION
Applies the user-defined $callback function to each element of the $array array.
array_walk(3) is not affected by the internal array pointer of $array. array_walk(3) will walk through the entire array regardless of
pointer position.
PARAMETERS
o $array
- The input array.
o $callback
- Typically, $callback takes on two parameters. The $array parameter's value being the first, and the key/index second.
Note
If $callback needs to be working with the actual values of the array, specify the first parameter of $callback as a refer-
ence. Then, any changes made to those elements will be made in the original array itself.
Note
Many internal functions (for example strtolower(3)) will throw a warning if more than the expected number of argument are
passed in and are not usable directly as a $callback.
Only the values of the $array may potentially be changed; its structure cannot be altered, i.e., the programmer cannot add, unset
or reorder elements. If the callback does not respect this requirement, the behavior of this function is undefined, and unpre-
dictable.
o $userdata
- If the optional $userdata parameter is supplied, it will be passed as the third parameter to the $callback.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
ERRORS /EXCEPTIONS
If function $callback requires more parameters than given to it, an error of level E_WARNING will be generated each time array_walk(3)
calls $callback.
EXAMPLES
Example #1
array_walk(3) example
<?php
$fruits = array("d" => "lemon", "a" => "orange", "b" => "banana", "c" => "apple");
function test_alter(&$item1, $key, $prefix)
{
$item1 = "$prefix: $item1";
}
function test_print($item2, $key)
{
echo "$key. $item2<br />
";
}
echo "Before ...:
";
array_walk($fruits, 'test_print');
array_walk($fruits, 'test_alter', 'fruit');
echo "... and after:
";
array_walk($fruits, 'test_print');
?>
The above example will output:
Before ...:
d. lemon
a. orange
b. banana
c. apple
d. fruit: lemon
a. fruit: orange
b. fruit: banana
c. fruit: apple
SEE ALSO array_walk_recursive(3), iterator_apply(3), list(3), each(3), call_user_func_array(3), array_map(3), information about the callback type,
foreach.
PHP Documentation Group ARRAY_WALK(3)