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sysadmin

Perl 

Sort IP Addresses Using Perl

July 12, 2019July 12, 2019 Dave 0 Comments Perl, programming, scripting, sysadmin

When dealing with lists of IP addresses, it was common for the numbers to merge together and lose track of duplicates, bad IP addresses etc. This Perl script helps you extract valid IPs from a block of text.

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Linux 

Disable IPv6 Ubuntu 18.04

December 31, 2018December 31, 2018 Dave 0 Comments linux, sysadmin

IPv6 shouldn’t be disabled you say? You’re probably right. Here is how you do it anyway:

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Compare Lists of IP Addresses with Perl
Perl 

Compare List of IP Addresses With Perl and Tk

October 10, 2018March 5, 2019 Dave 0 Comments coding, Perl, programming, scripting, sysadmin

If you happen to have a list of IPs and you want to compare to another list IPs, you can

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Perl Match IP List to Subnet List
Perl 

Use Perl to Match IP to Subnets

October 9, 2018January 18, 2021 Dave 4 Comments coding, Perl, programming, scripting, sysadmin

Use Perl to Match Multiple IP Addresses to Multiple Known Networks.

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perl uri status checker
Perl 

Perl Script to Test URI Status

July 20, 2018March 6, 2019 Dave 0 Comments automation, coding, Perl, programming, scripting, sysadmin

The purpose of this Perl script is for base-lining multiple websites and generating a before and after report.

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troublshooting flowchart
Linux 

How to Troubleshoot Crontab Problems

July 20, 2018October 9, 2018 Dave 0 Comments crontab, linux, scheduling, sysadmin

Knowing how to troubleshoot your cron services will help determine why your script isn’t running as expected. There are several

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crontab messages
Linux 

Get Messages From Crontab

July 20, 2018October 10, 2018 Dave 0 Comments crontab, linux, scheduling, sysadmin

Getting Messages from Crontab We are used to getting messages, and crontab provides them in various ways: email, syslog, log

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crontab examples
Linux 

Examples of Using Crontab

July 20, 2018October 10, 2018 Dave 0 Comments crontab, linux, scheduling, sysadmin

Here are a few examples of useful crontab tasks:

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Tags

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For I am not ashamed of the gospel, for it is the power of God for salvation to everyone who believes. 
– Romans 1:16

Do you see a man skillful in his work? He will stand before kings; he will not stand before obscure men.
– Proverbs 22:29

Whatever you do, work heartily, as for the Lord and not for men..
– Colossians 3:23

One who is faithful in a very little is also faithful in much, and one who is dishonest in a very little is also dishonest in much.
– Luke 16:10

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