jtviegas

#!/bin/bash

# http://bash.cumulonim.biz/NullGlob.html
shopt -s nullglob

# get this file with the following command:
# curl https://gist.githubusercontent.com/jtviegas/35b97994f7a34e5e06ab055f2f47a624/raw/282a0c6628969e5812a70e372ba6636fe0c594ea/helper.sh --output helper.sh


this_folder="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"

jtviegas

# http://bash.cumulonim.biz/NullGlob.html
shopt -s nullglob

verify(){
  local _r=0

  which kubectl 1>/dev/null
  if [ ! "$?" -eq "0" ] ; then err "please install kubectl" && return 1; fi

  which az 1>/dev/null

jtviegas

the vm

get the vm flags

-XX:+UnlockDiagnosticVMOptions -XX:+PrintFlagsFinal

check just in time compilation

levels: 1,2,3 (C1 compiler)

level: 4 (C2 compiler => native code) (not on 32 bit vm)

-XX:+PrintCompilation

save compilation log in remote jvm

-XX:+UnlockDiagnosticVMOptions -XX:+LogCompilation

jtviegas

17 Principles of (Unix) Software Design:

1. Rule of Modularity: Write simple parts connected by clean interfaces.
2. Rule of Clarity: Clarity is better than cleverness.
3. Rule of Composition: Design programs to be connected to other programs.
4. Rule of Separation: Separate policy from mechanism; separate interfaces from engines.
5. Rule of Simplicity: Design for simplicity; add complexity only where you must.
6. Rule of Parsimony: Write a big program only when it is clear by demonstration that nothing else will do.
7. Rule of Transparency: Design for visibility to make inspection and debugging easier.
8. Rule of Robustness: Robustness is the child of transparency and simplicity.
9. Rule of Representation: Fold knowledge into data so program logic can be stupid and robust.

jtviegas

ms sql server

blocking queries

SELECT TOP 10 r.session_id, r.plan_handle,      r.sql_handle, r.request_id,      r.start_time, r.status,      r.command, r.database_id,      
r.user_id, r.wait_type,      r.wait_time, r.last_wait_type,      r.wait_resource, r.total_elapsed_time,      r.cpu_time, r.transaction_isolation_level,      
r.row_count, st.text  
FROM sys.dm_exec_requests r  
    CROSS APPLY sys.dm_exec_sql_text(r.sql_handle) as st  
    WHERE r.blocking_session_id = 0       and r.session_id 

jtviegas

Keybase proof

I hereby claim:

• I am jtviegas on github.
• I am jtviegas (https://keybase.io/jtviegas) on keybase.
• I have a public key ASD7R6ci7rKBnaaCP7FiK2A7etJf89As4GoIYxtbo35kAwo

To claim this, I am signing this object:

jtviegas

# necessary git basic config - avoid unnecessary merges
git config pull.rebase true

# Check ports
# To list the TCP ports that are being listened on, and the name of each listener’s daemon and its PID, run the following command:
sudo netstat -plnt

# download a folder from a github project
svn export https://github.com/jtviegas/terraform-modules/trunk/admin admin

jtviegas

### get notebook tokens

> ipython
[1] : system("jupyter" "notebook" "list")
Out[1]: 
['Currently running servers:','http://localhost:8895/token=067470c5ddsadc54153ghfjd817d15b5d5f5341e56b0dsad78a :: /u/user/dir']

### istall on untrusted server

jtviegas

	<build>
		<plugins>
    ...
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-pmd-plugin</artifactId>
				<version>3.10.0</version>
				<executions>
					<execution>
						<!-- results in target/pmd.xml and target/site/pmd.html -->

jtviegas

<?xml version="1.0"?>

<ruleset name="Custom Rules"
    xmlns="http://pmd.sourceforge.net/ruleset/2.0.0"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://pmd.sourceforge.net/ruleset/2.0.0 https://pmd.sourceforge.net/ruleset_2_0_0.xsd">

    <description>
        custom static analysis rules
    </description>