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Commands tagged timer from sorted by
Terminal - Commands tagged timer - 12 results
alias timer='export ts=$(date +%s);p='\''$(date -u -d @"$(($(date +%s)-$ts))" +"%H.%M.%S")'\'';watch -n 1 -t banner $p;eval "echo $p"'
2013-08-24 16:18:45
User: ichbins
Functions: alias banner date eval watch
Tags: timer banner
1

Starts and shows a timer. banner command is a part of the sysvbanner package. Instead of the banner an echo or figlet commands could be used. Stop the timer with Ctrl-C and elapsed time will be shown as the result.

sleep $((3600 - ($(date +%s) % 3600) ))
2012-12-09 16:21:57
User: Mozai
Functions: date sleep
2

pauses exactly long enough to wake at the top of the hour

for ((x=0;;x+=5)); do sleep 5; hours=$(($x/3600)); minutes=$(($x%3600/60)); seconds=$(($x%60)); echo "$hours hours $minutes minutes $seconds seconds have elapsed" | festival --tts & done
2012-03-06 22:58:43
User: mrklaw
Functions: echo sleep
0

Says time every 5 seconds in hours, minutes and seconds using festival.

for ((x=0;;x+=5)); do sleep 5; echo $x | festival --tts & done
2012-03-06 21:17:51
User: mrklaw
Functions: echo sleep
0

works the same, but uses festival instead of espeak

for ((x=0;;x+=5)); do sleep 5; espeak $x & done
2012-02-22 00:26:57
Functions: sleep
Tags: audio bash timer
5

Useful contexts :

You are doing yoga or some other physical training in which you are holding a position.

Or you practice the pomodoro productivity technique.

Or your girlfriend said "We're leaving in 40 minutes".

Design details:

sleep executes before espeak to give you a 5 seconds head start.

espeak is run in the background so it doesn't mess up the timing.

MIN=10;for ((i=MIN*60;i>=0;i--));do echo -ne "\r$(date -d"0+$i sec" +%H:%M:%S)";sleep 1;done
2011-02-20 11:56:28
User: flatcap
Functions: echo sleep
11

Countdown clock - Counts down from $MIN minutes to zero.

I let the date command do the maths.

This version doesn't use seq.

MIN=10 && for i in $(seq $(($MIN*60)) -1 1); do printf "\r%02d:%02d:%02d" $((i/3600)) $(( (i/60)%60)) $((i%60)); sleep 1; done
time read x
2010-09-30 09:23:01
User: ubersoldat
Functions: read time
Tags: bash timer
0

Say you want to time how long a task you're performing takes. Start this simple timer and you're done!

function countdown { case "$1" in -s) shift;; *) set $(($1 * 60));; esac; local S=" "; for i in $(seq "$1" -1 1); do echo -ne "$S\r $i\r"; sleep 1; done; echo -e "$S\rBOOM!"; }
2010-06-30 12:20:01
User: kniht
Functions: echo seq set sleep
Tags: timer counter
1

The biggest advantage over atoponce's nifty original is not killing the scrollback. Written assuming bash, but shouldn't be terribly difficult to port to other shells. S should be multiple spaces, but I can't get commandlinefu to save/show them properly, any help?

i=$((15*60)); while [ $i -gt 0 ]; do clear; echo $i | figlet; sleep 1; i=$(($i-1)); done;
2010-06-22 17:49:36
User: atoponce
Functions: echo sleep
Tags: figlet timer
1

Requires figlet. Other than that, this should be portable enough across all the Bourne-compatible shells (sh, bash, ksh, zsh, etc).

Produces a massive number using figlet that counts down the number of seconds for any given minute interval. For example, here's a 4-minute timer:

i=$((4*60)); while [ $i -gt 0 ]; do clear; echo $i | figlet; sleep 1; i=$(($i-1)); done;

And a 1-minute timer:

i=$((1*60)); while [ $i -gt 0 ]; do clear; echo $i | figlet; sleep 1; i=$(($i-1)); done;
MIN=1 && for i in $(seq $(($MIN*60)) -1 1); do echo -n "$i, "; sleep 1; done; echo -e "\n\nBOOOM! Time to start."
2010-06-20 15:19:12
User: atoponce
Functions: echo seq sleep
Tags: timer counter
10

Simple countdown clock that should be quite portable across any Bourne-compatible shell. I used to teach for a living, and I would run this code when it was time for a break. Usually, I would set "MIN" to 15 for a 15-minute break. The computer would be connected to a projector, so this would be projected on screen, front and center, for all to see.

sudo pmset schedule sleep "08/31/2009 00:00:00"
2009-05-14 09:31:32
User: hobzcalvin
Functions: sleep sudo
4

Schedule your Mac to sleep at any future time.

Also wake, poweron, shutdown, wakeorpoweron. Or repeating with

sudo pmset repeat wakeorpoweron MTWRFSU 7:00:00

Query with

pmset -g sched

Lots more at http://www.macenterprise.org/articles/powermanagementandschedulingviathecommandline