Hi
I am running a script (which compares two directory contents) for which I am getting an output of 70 pages in which few pages are blank so I was able to delete those blank lines.
But I also want to delete the headers present for each page. can any one help me by providing the code... (1 Reply)
Hi , I have written a csh script which is as follows but it keeps outputing a unneccesary output as show below. How can i remove that output and prevent it from displaying it when the script runs?
set USER = "aaa"
set PASSWORD = "bbb"
ftp -n 10.80.12.18<<XX
user $USER $PASSWORD... (2 Replies)
Hello Friends,
In a script i m using different temporary file and i remove them in the end.
During script execution i have some garbage output which is not required.
For example: Garbage Output
++ rm temp_out temp_a temp_b temp_c
++ rm Filter1 Filter2
Script : Even i am redirecting rm... (7 Replies)
Hi
I have a new hdd installed ,and sometimes if i start a session or ftp download while downloading sometimes it creates a ./filename.type Input/output errorso in that case i can-not overwrite ,rename ,remove ,or place a file with the same name on that dir.
How to prevent this and is there... (3 Replies)
I am back again with one more question,
so I have a phonebook file with names, phone#s
for example: smith, joe 123-456-7890
using awk I want to display all entries with a specific area code. here 's what i have tried so far:
awk '$2~/^123/ {print}' phonebook
I can't figure... (1 Reply)
Hi,
I'm on AIX 5.2. I wrote a script that makes a traceroute to a host. The script works fine but each time it using the traceroute command its generate the 2 output lines.
this is the command in my script
traceroute -n -m 5 -w 2 $Host | grep 172 | awk '{print $2}' | tail -1
traceroute... (2 Replies)
Hi All
I am trying to perform the below operation -count=`cat abc.txt | wc -l`
echo$count
5
Head=Start"$DATE"00000"$count"File
echo $HEAD
START15020300000 5File
There is a space coming before 5 which is not needed . How to ignore that . (4 Replies)
If run the below code today its creating all directory and getting output files,I f run same code tomorrow I am getting error.
can any one give suggestion to sortout this error.
OSError: no such file or directory : '062518'My code looks like this
import paramiko
import sys
import os ... (8 Replies)
Hello,
I am trying to print searched multiple keywords in multiple files.
It is almost okay with the code but the code puts filename in front of each line.
How may I get rid of it?
-grep -A1 'word1' *.txt | grep -A1 'word2' | grep -A1 'word3'
I expect:
Real outcome:
How may I... (3 Replies)
Discussion started by: baris35
3 Replies
LEARN ABOUT DEBIAN
file::queue
File::Queue(3pm) User Contributed Perl Documentation File::Queue(3pm)NAME
File::Queue - Persistent FIFO queue implemented in pure perl!
SYNOPSIS
use strict; # always!
use File::Queue;
my $q = new File::Queue (File => '/var/spool/yourprog/queue');
$q->enq('some flat text1');
$q->enq('some flat text2');
$q->enq('some flat text3');
# Get up to first 10 elements
my $contents = $q->peek(10);
my $elem1 = $q->deq();
my $elem2 = $q->deq();
# empty the queue
$q->reset();
DESCRIPTION
This module allows for the creation of persistent FIFO queue objects.
File::Queue only handles scalars as queue elements. If you want to work with references, serialize them first!
The module was written with speed in mind, and it is very fast, but it should be used with care. Please refer to the CAVEATS section.
Interface
File::Queue implements a OO interface. The object methods and parameters are described below.
Methods
File::Queue supports all of the queue-related functions a developer should expect.
o new()
Instantiates your File::Queue object. Parameters are described in the next sub-section.
o enq()
Enqueues a string element to the queue.
o deq()
Dequeues a string element from the queue, and returns the element. If the queue is empty, nothing is returned.
o peek(n)
Returns an arrayref containing the next n elements in the queue. If the queue size is less than n, all elements are returned. If the
queue is empty, an empty arrayref is returned.
o reset()
Emptys the queue.
o close()
Closes the filehandles belonging to the queue object ('.dat' and '.idx').
o delete()
Deletes the files belonging to the queue object ('.dat' and '.idx').
Parameters
There are a number of parameters that can be passed when constructing your File::Queue objects. Parameters are case-insensitive.
o File (required)
File::Queue creates two files using this parameter as the base. In the case of the example in the SYNOPSIS, the two files are
'/var/spool/yourprog/queue.dat' and '/var/spool/yourprog.idx'.
The '.dat' file holds all of the data, the '.idx' file holds the byte index (pointer) of the starting point of the first element in the
queue.
o Mode (optional)
The file bit mode to be shared by both the '.dat' and '.idx' files. Defaults to '0600'.
o Seperator (optional)
The character or byte sequence that is used to seperate queue elements in the '.dat' file. It should be something you can guarantee
will NEVER appear in your queue data. Defaults to the newline character.
o BlockSize (optional)
This is the size of the byte chunks that are pulled at each iteration when checking for the end of a queued element. Defaults to 64,
which will be fine for most cases, but can be tweaked or tuned for your specific case to squeeze out a few extra nanoseconds.
CAVEATS
This module should never be used in situations where the queue is not expected to become empty.
The '.dat' file is not truncated (emptied) until the queue is empty.
Even the data you've already dequeued remains in the '.dat' file until the queue is empty.
If you keep enqueueing elements and never FULLY dequeue everything, eventually your disk will fill up!
SEE ALSO
Tie::File
AUTHOR
Jason Lavold <jlavold [ at ] gmail.com>
perl v5.10.0 2008-12-22 File::Queue(3pm)