Author Archives: ronaldpringadi

Using grep as highlighter

Posted on December 18, 2015 by ronaldpringadi

1$ grep –color -E ‘^|pattern1|pattern2’ file name

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TCL programming

Posted on November 12, 2015 by ronaldpringadi

A reusable expect dispatcher I kept around for running the same kind of operation across a list of servers — untar an index, restart a service, patch a config file. The trick is that the script reads the first command-line … Continue reading →

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Simple unit test is bash file

Posted on October 28, 2015 by ronaldpringadi

Consider the following 3 files: 1. shellTestFramework.sh 1234567891011121314151617181920212223242526272829303132333435363738394041424344454647#!/bin/bash # Copyright (c) Ronald Pringadi # Before each Test function setUpTest(){ #"Please overwrite this function on your unit test. Something that need to be done before each test" … Continue reading →

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Multithreading in Java using ThreadPoolExecutor

Posted on September 23, 2015 by ronaldpringadi

ThreadWorker is your custom class. 123456789try { ThreadPoolExecutor executor = (ThreadPoolExecutor) Executors.newFixedThreadPool(MAX_THREAD_SIZE); for (int i = 1; i Random randomGenerator = new Random(); executor.submit(new ThreadWorker("worker" + i, randomGenerator.nextInt(10))); LOG.info(i); } } catch (Exception e) { LOG.error("Hmm something is not right.", … Continue reading →

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Getting the caller method details using Java

Posted on September 23, 2015 by ronaldpringadi

12345678910 public static String getCallerClassName() { StackTraceElement[] stElements = Thread.currentThread().getStackTrace(); for (int i=1; i<stElements.length; i++) { StackTraceElement ste = stElements[i]; if … Continue reading →

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Compare File Permission Recussively on Linux Directories

Posted on August 13, 2015 by ronaldpringadi

Scan 12345678910111213141516171819202122#!/usr/bin/perl use File::Find; my $directory1 = ‘/root/rpmbuild/RPMSX’; my $directory2 = ‘/root/rpmbuild/RPMSX.bak’; find(\&hashfiles, $directory1); sub hashfiles { my $file1 = $File::Find::name; (my $file2 = $file1) =~ s/^$directory1/$directory2/; return(0) if (! -f $file2) ; … Continue reading →

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Linux find files and total their size

Posted on July 22, 2015 by ronaldpringadi

1find ./ -type f -newerct "1 May 2015" ! -newerct "1 Jul 2015" -print0 | du –files0-from=- -hc| tail -n1

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Wireshark filters

Posted on June 22, 2015 by ronaldpringadi

Filter by ip dst or source using wildcard on the last 3 digits: (ip.dst == 192.168.0.0/24) || (ip.src == 192.168.0.0/24)

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MSBuild common errors and how to fix them

Posted on April 16, 2015 by ronaldpringadi

Building with MSBuild produced an error or warning Run MSBuild with (d)etailed verbose mode and capture the output to a file: 1msbuild someproject.csproj /t:Clean;Build;Transfer /p:OutputPath=bin\autobuild;BuildNumber=-1;Configuration=Debug /v:d >build.txt Open build.txt and search for the MSBxxxx error or warning code. For example: … Continue reading →