Programming – Buster Collings

Simple Countdown Timer and Stopwatch with Laps for Bash

Thu, 03 Mar 2016 22:18:23 +0000

There are a lot of decent, small shell scripts for creating a simple timer or simple stopwatch. Yet, I needed a bit more than the ones I found on Google, so of course, I made some of my own.

My simple stopwatch for Bash lets you create laps, pause and gives you a total elapsed time. Keep in mind, it’s all presented in seconds.

	#!/bin/bash

	function stopwatch() {
	local n=0
	local t=0
	local continuing="true"
	local lap=1
	local key="~"
	local pausing="~"

	cat <

	* type "p" to pause and "r" to resume
	* hit the spacebar to start a new lap
	* if paused you will resume with a new lap
	* type "q" or "x" or Ctrl-c to stop

	EOF

	function summary() {
	continuing="false" # break the while loop
	local elapsed=$(($t-$lap+1))
	printf "\r\033[0KLap ${lap}: $n seconds\n"
	printf "\nTotal Elapsed: $elapsed seconds\n"
	}

	trap "summary" SIGINT

	while [[ $continuing = "true" ]]; do
	key="~"
	pausing="~"
	printf "\r\033[0KLap ${lap}: $n seconds"
	read -s -t 1 -n 1 key

	case "$key" in
	"")
	printf "\r\033[0KLap ${lap}: $n seconds\n"
	key=""
	n=-1
	((lap++))
	;;
	q\|x)
	summary
	break
	;;
	p)
	function paused() {
	read -s -n 1 pausing
	case "$pausing" in
	"")
	printf "\r\033[0KLap ${lap}: $n seconds\n"
	key=""
	n=-1
	((lap++))
	;;
	q\|x)
	summary
	break
	;;
	r)
	: # noop
	;;
	*)
	paused
	;;
	esac
	}
	paused
	;;
	esac
	((t++))
	((n++))
	done
	}

view raw stopwatch.sh hosted with ❤ by GitHub

My simple timer for Bash just countdowns the number of seconds you provide and then beeps. Like my stopwatch script, it’s all based on seconds so that there aren’t a bunch of command line arguments to deal with.

	#!/bin/bash

	function timer() {
	if [[ $1 -lt 1 ]]; then
	cat <<EOF

	Usage: timer

	EOF
	return 1
	fi

	local n="$1"
	while [[ $n -gt 0 ]]; do
	printf "\r\033[0K==> $n"
	sleep 1
	((n--))
	done
	printf "\r\a"
	}

view raw timer.sh hosted with ❤ by GitHub

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Cordova Tip: Automatically Open Web Inspector for iOS Simulator

Wed, 03 Feb 2016 17:44:06 +0000

How many times have you painfully, manually opened Safari Web Inspector after starting the iOS Simulator with `cordova emulate`? Too often. Me too. No more.

I found a nifty osascript gist then tweaked it a little and put it inside a shell script `ios-sim-inspector`.

Then, I added a couple of new Cordova aliases to my bash profile (leveraging a couple of existing aliases)


## Existing Aliases ##

# Run iOS Simulator
alias corem="killall Simulator || echo && cordova emulate"

# Build and Run iOS Simulator
alias corbem="killall Simulator || echo && cordova build && cordova emulate"


## New Aliases with Web Inspector'ing ##

# Run iOS Simulator with Safari Web Inspector (for Debugging)
alias coremd="corem && ios-sim-inspector"

# Build and Run iOS Simulator with Safari Web Inspector (for Debugging)
alias corbemd="corbem && ios-sim-inspector"

Now you know how to painlessly open Safari Web Inspector after starting the iOS Simulator with Cordova emulate from the command line.

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jsFiddle Player to run, save and download combined CSS, JS and HTML

Wed, 16 May 2012 02:27:24 +0000

I created a very simple Chrome extension, jsFiddle Player, that allows you to save the combined CSS, JS & HTML output of a jsFiddle. I personally wanted an easy way to download the resulting rendered web page.

jsFiddle is a great tool, hopefully you find jsFiddle Player to be a helpful Chrome extension.

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Yes, No, Don’t Care – Urtak Asks Simple Questions

Wed, 19 Oct 2011 21:26:17 +0000

Urtak is a nifty little tool. It’s free and I must say can be a little bit addictive.

I’ve created a simple feedback collection for Buying Concert & Sports Tickets Online

Scope it out here!

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