Hi,
I have this problem of separating 10 consecutive lines from a file, say starting from 21 to 30... I have used a filter like this..
head -n 30 myfile | tail -n 10
Is there a simpler way than this? (2 Replies)
Hi,
I am planning to implement a scheduled script that will go against my log files (every hour), search for a set of key words (errors, exceptions, faults etc). The script must be intelligent enough to scan only the new lines added to the log file since it last ran.
I can use grep for... (3 Replies)
Hi ,
I'm looking for a way to merge two lines only for a given pattern / condition.
Input :
abcd/dad + -49.201 2.09 -49.5 34 ewrew rewtre *
fdsgfds/dsgf/sdfdsfasdd +
-4.30 0.62 -49.5 45 sdfdsf cvbbv *
sdfds/retret/asdsaddsa +
... (1 Reply)
Hello
I have a file in following format:
IV 08:09:07
NM 08:12:01
IC 08:12:00
MN 08:14:20
NM 08:14:15
I need a script to compare time on each line with previous line and show the inconsecutive line. Ex.:
08:12:00
08:14:15
A better way... (6 Replies)
Hi guys
I am deleting a unique line from the file and also need to remove the line above it which is NOT unique and servers as a record separator. Here is an example:
#
101 803E 823F 8240
#
102 755f 4F2A 4F2B
#
290 747D 0926 0927
#
999 8123 813E ... (5 Replies)
i want to write a shell script that correct a text file.for example if i have the input file:
"john has has 2 apples
anne has 3 oranges oranges"
i want that the output file be like this:
"john has 2 apples
anne has 3 oranges"
i've tried to read line by line from input text file into array... (11 Replies)
We have very large transaction logs that have transactions which start with a line that starts with 'Begin :' and ends with a line that starts with 'End :'. For most transactions there is valid data between those two lines.
I am trying to get rid of lines that look like this:
Begin :... (11 Replies)
I have a text file that is about 90,000 lines long. How would I delete lines 64-89, 152-177, 240-265, 328-353... etc? The sections I would like to delete are 26 lines long and the number of lines between the sections I would like to delete is 62 lines. Thanks very much in advance. (6 Replies)
I have a file lake this
cat ex1.txt
</DISCOUNTS>
<B2B_SPECIFICATION elem="0">
<B2B_SPECIFICATION elem="0">
<DESCR>Netti 2 </DESCR>
<NUMBER>D02021507505</NUMBER>
</B2B_SPECIFICATION>
<B2B_SPECIFICATION elem="1">
<DESCR>Puhepaketti</DESCR>... (2 Replies)
I have some data that looks like this:
PXD= ZW< 1,6
QR> QRJ== 1,2(5)
QR> QRJ== 4,1(2)
QR> QRJ== 4,2
QRB= QRB 4,2
QWM QWM 6,2
R<C ZW< 11,2
R<H= R<J= 6,1
R>H XZJ= 1,2(2)
R>H XZJ= 2,6(2)
R>H XZJ= 4,1(2)
R>H XZJ= 6,2
RDP RDP 1,2
What I would like to do is if fields $1 and $2 are... (5 Replies)
Discussion started by: jvoot
5 Replies
LEARN ABOUT REDHAT
thread::queue
Thread::Queue(3pm) Perl Programmers Reference Guide Thread::Queue(3pm)NAME
Thread::Queue - thread-safe queues
SYNOPSIS
use Thread::Queue;
my $q = new Thread::Queue;
$q->enqueue("foo", "bar");
my $foo = $q->dequeue; # The "bar" is still in the queue.
my $foo = $q->dequeue_nb; # returns "bar", or undef if the queue was empty
my $left = $q->pending; # returns the number of items still in the queue
DESCRIPTION
A queue, as implemented by "Thread::Queue" is a thread-safe data structure much like a list. Any number of threads can safely add elements
to the end of the list, or remove elements from the head of the list. (Queues don't permit adding or removing elements from the middle of
the list).
FUNCTIONS AND METHODS
new The "new" function creates a new empty queue.
enqueue LIST
The "enqueue" method adds a list of scalars on to the end of the queue. The queue will grow as needed to accommodate the list.
dequeue The "dequeue" method removes a scalar from the head of the queue and returns it. If the queue is currently empty, "dequeue" will
block the thread until another thread "enqueue"s a scalar.
dequeue_nb
The "dequeue_nb" method, like the "dequeue" method, removes a scalar from the head of the queue and returns it. Unlike "dequeue",
though, "dequeue_nb" won't block if the queue is empty, instead returning "undef".
pending The "pending" method returns the number of items still in the queue.
SEE ALSO
threads, threads::shared
perl v5.8.0 2002-06-01 Thread::Queue(3pm)