Arch::RunLimit(3pm) User Contributed Perl Documentation Arch::RunLimit(3pm)NAME
Arch::RunLimit - class to enforce a limit on the number of running processes
SYNOPSIS
use Arch::RunLimit
my $limit = Arch::RunLimit->new(file => $limit_file);
die "run-limit exceeded" if $limit->exceeded;
DESCRIPTION
Arch::RunLimit provides an easy way to enforce a limit on the number of concurrently running processes.
METHODS
The following methods are available:
new, exceeded.
new %opts
Create a new Arch::RunLimit object with the specified options:
file (mandatory)
The file used to keep track of the number of processes.
limit
The maximum number of concurrently running processes. Defaults to 5.
timeout
The timeout after which a process is assumed to be terminated in seconds. Defaults to 1800 (30 minutes).
exceeded
Return 1 if the number of concurrently running processes has been exceeded, 0 otherwise.
BUGS
Awaiting your reports.
AUTHORS
Mikhael Goikhman (migo@homemail.com--Perl-GPL/arch-perl--devel).
Enno Cramer (uebergeek@web.de--2003/arch-perl--devel).
perl v5.10.1 2005-06-21 Arch::RunLimit(3pm)
Check Out this Related Man Page
Arch::SharedCache(3pm) User Contributed Perl Documentation Arch::SharedCache(3pm)NAME
Arch::SharedCache - a synchronized data structure (map) for IPC
SYNOPSIS
use Arch::SharedCache;
my $cache = Arch::SharedCache->new(
dir => '/tmp/dir-listings',
max_size => 100,
expiration => 600, # 10 minutes
);
sub ls_long { scalar `ls -l $_[0]` }
my $user_dir = '/usr/share';
$cache->store($user_dir => ls_long($user_dir));
$cache->fetch_store(sub { ls_long($_[0]) }, qw(/tmp /bin /usr/share));
printf "Cached listing of $user_dir:
%s", $cache->fetch($user_dir);
$cache->delete($user_dir);
# examine /tmp/dir-listings/ after running this script
# see also synopsys of Arch::SharedIndex
DESCRIPTION
Arch::SharedCache provides an Arch::SharedIndex implementation using a single file per value.
METHODS
The following methods are available:
new.
Other methods are documented in Arch::SharedIndex.
new options
Create a new Arch::SharedCache object. options is a hash of options.
dir The cache directory used to store data. Will be created if it doesn't exist.
index_file
Name of the index file for the cache. Defaults to "dir/.index".
BUGS
Awaiting for your reports.
AUTHORS
Mikhael Goikhman (migo@homemail.com--Perl-GPL/arch-perl--devel).
Enno Cramer (uebergeek@web.de--2003/arch-perl--devel).
SEE ALSO
For more information, see Arch::SharedIndex.
perl v5.10.1 2005-09-17 Arch::SharedCache(3pm)
I have a huge matrix file containing some 1.5 million rows and 6000 columns. The matrix looks something like this:
1 2 3
4 5 6
7 8 9
3 4 5
I want to add all the numbers in the columns of this matrix and display the result to my stdout. This means that the numbers in the first column are:
... (2 Replies)
Hi,
Just trying to get to grips with sed and awk for some reporting for work and I need some assistance:
I have a file that lists policy names on the first line and then on the second line whether the policy is active or not.
Policy Name: Policy1
Active: yes
Policy... (8 Replies)
version info :
vi availabe with RHEL 5.4
I have a text file with 10,000 lines. I want to copy lines from 5000th line to 7000th and redirect to a file. Any idea how I can do this?
Note:
The above scenario is just an example. In my actual requirement, the file has 14 million lines and I want... (9 Replies)
Hi everyone,
I know the following questions are noobish questions but I am asking them because I am confused about the basics of history behind UNIX and LINUX.
Ok onto business, my questions are-:
Was/Is UNIX ever an open source operating system ?
If UNIX was... (21 Replies)
Hello,
I couldn't find an actual introduction thread, so I decided to just put this here.
I go by d0wngrade online. I have been programming in multiple languages for about 15+ years. I started with standard web design languages like HTML and CSS, but I then advanced from design to development... (2 Replies)
Hi guys...
The first active code line in AudioScope.sh is set -u .
This causes a complete exit if a variable is used/found but has not been allocated at the start of the program.
However, apart from writing code to do the task, is there a switch to to check which variables have been... (17 Replies)
Hi.
In thread https://www.unix.com/shell-programming-and-scripting/267833-grouping-counting.html rovf and I had a mini-discussion on grep and awk.
Here is a demo script that compares the awk and grep approaches for this single problem:
#!/usr/bin/env bash
# @(#) s2 Demonstrate group... (1 Reply)
Hello,
I have to fish out some specific columns from a file based on the header value. I have the list of columns I need in a different file. I thought I could read in the list of headers I need,
# file with header names of required columns in required order
headers_file=$2
# read contents... (11 Replies)
For those interested in installing dash shell on OSX Lion to help test POSIX compliancy of shell scripts, it is quite easy. I did it like this:
If you don't have gcc on your system:
0. Download and install the Command Line Tools for Xcode package from Sign In - Apple *
1. Download the dash... (2 Replies)
Hello and thanks in advance for any help anyone can offer me
I'm trying to learn the find command and thought I was understanding it... Apparently I was wrong. I was doing compound searches and I started getting weird results with the -size test. I was trying to do a search on a 1G file owned by... (14 Replies)
I have data of an excel files as given below,
file1
org1_1 1 1 2.5 100
org1_2 1 2 5.5 98
org1_3 1 3 7.2 88
file2
org2_1 1 1 2.5 100
org2_2 1 2 5.5 56
org2_3 1 3 7.2 70
I have multiple excel files as above shown.
I have to copy column 1, column 4 and paste into a new excel file as... (26 Replies)
Dear All,
Taking a break from Vue.js coding for the site, SEO and YT videos; and hopefully addressing some well deserved criticism from some here that I have been too focused on the visual aspects of the forums versus the substance and the community....
While the "current generation... (9 Replies)
Hi all...
Well guys and gals, I jumped in at the deep end and found things that PERL cannot do by default.
Many tricky terminal escape codes are not catered for so I had to create workarounds.
One thing I searched for was this:
Passing perl variable to shell command
AND, @Neo this was... (15 Replies)