ASCII file manipulation

• cut - select portions of each line of a file
• gron - transform JSON into discrete, greppable assignments
• meld - interactive line-by-line merging of two files
• sort - sort lines of text files
• uniq - remove duplicate lines from a sorted file
• wc - print the number of bytes, words, and lines in files

Image file manipulation

• convert (ImageMagick) - resize, change format, ...
• identify (ImageMagick) - describe the format and characteristics of image files
  see http://www.imagemagick.org/script/identify.php

Admin tools

• ls --color=never
  or
  if (type ls) == (ls --color=tty)
  then (unalias ls)
  also see http://www.geekgumbo.com/2011/11/04/changing-the-directory-color-in-the-bash-shell/
• ethtool - Display or change ethernet card settings
• xrandr - is used to set the size, orientation and/or reflection of the outputs for a screen. It can also set the screen size
• If your ATA drive supports self-tests, you should run them on a regular basis, for example one per week:
  smartctl -t long /dev/hd?
  After the test has completed, you should examine the results with:
  smartctl -l selftest /dev/hd?

Bash refrences

• BashGuide / Practices
• Excellent discussion of string manipulation in BASH

Serial

• To enumerate the active serial ports:
  dmesg | grep tty
• minicom - a procomm like communications program.
• putty - terminal emulator client for the SSH, Telnet, rlogin, and raw TCP computing protocols and as a serial console client.
• screen - a full-screen window manager that multiplexes a physical terminal between several processes (typically interactive shells).
• stty
• tip - establishes a full-duplex connection to another machine, giving the appearance of being logged in directly on the remote cpu.
• 5 commands for Connection to the Serial Console

Multiplexing Configuration Managers

• A comparison article with lots of references
• cfengine, rdist, puppet, bcfg2, csync2
• Debian Installer and debconf preseeding

Disk Utilities

• /proc/partitions: major minor block name(sdc1).

File backup methods

• rsync - transfer just the differences between two sets of files

Find examples

• # Find all regular files that have been modified in the last 7 days
  find / -type f -mtime 7

JavaScript

• JR's JavaScript Tutorial

Single Board Computers (SMB)

• Raspberry Pi is suppose to be a $25 single board computer, might replace serial DataStorm.
• Cotton Candy ARM PC

SQL

• Perl: A Short Guide to DBI (including CSV)

NoSQL

• UnQL (uncle)
• SQLite
• CouchDB

Tunneling

• SSH Tunneling
• ssh command that keeps the session alive:
  ssh -o ServerAliveInterval=10 toby@wherever