blip-lorist

Exploring permutations and a mystery with BSD and GNU split filenames

Published on: 2018-01-22 05:36:09 at lorainekv.com

Recently, I was playing around with the split command-line tool on Mac OS X, and I decided to chop a 4000-line file into 4000 separate single-line files. However, when I attempted to run split -l1, I ran into a funny error:

split: too many files

blip-lorist

Database Linkwalk

Concepts

OLAP vs OLTP (article)
ACID (article)
Vertical vs Horizonal Table Partitioning (article)

SQL

Database Denormalization (article)

blip-lorist

# Add to your .bash_profile or .bash_aliases
alias gp='if grep -r --exclude-dir={.git,tmp,log,coverage,public} -Hn binding.pry .; then echo Please remove breakpoints in the above files; else git push; fi'

blip-lorist

cat input.csv | awk '{print $0,gsub(/PATTERN/,"")}'| awk ' $NF > 1 {print $0}' > output.txt

blip-lorist

Input: 
A text file with a URL on each line. Example url-list.txt:
http://blah.com
http://blah2.com

Run: 
while read url; do  curl -I $url 2> /dev/null | head -n1 | awk -v url=$url '{print $2, url}'; done < url-list.txt > link-statuses.txt

Output: 
link-statuses.txt

blip-lorist

Tmux Setup Guide

Why even?

• Workflow management: Tired of opening the same directories / windows / panes when working on a project? You can save it all to a session and return at any time.
• Terminal window and pane management (handy when using vim)
• Session management: run time-consuming terminal processes in one session, and go do other stuff in other sessions

Installation (OS X)

brew install tmux