On Debian and derivatives, this includes sub-second sleeps and a nice human-readable way to specify the time. Since the sleep command is used, this script allows to specify the duration for which to count in the same precision as your sleep allows. The script can either be used as a stop watch (counting up until interrupted) or as a timer that runs for the specified amount of time. The tool that I have in my $PATH looks like this: #!/bin/sh The latter is inadequate because it keeps the CPU busy for no good reason. After enough time passed, the counter will skip a second. The former is inadequate because due to the small time spent doing the printing, the output will not actually happen once per second but a bit less than that which is suboptimal. Instead, the proposed solutions either use a sleep 1 between subsequent timer outputs or a busy loop that outputs as fast as possible. I'm surprised that nobody used the sleepenh tool in their scripts. In bash, add these lines to your ~/.bashrc (the sleep 0.1 will make the system wait for 1/10th of a second between each run so you don't spam your CPU): countdown() ))Ĭombine this with some way of playing sound in linux terminal ( Play MP3 or WAV file via the Linux command line) or Cygwin ( cat /path/foo.wav > /dev/dsp works for me in Babun/Windows 7) and you have a simple flexible timer with alarm! You can combine these into simple commands by using bash (or whichever shell you prefer) functions. If you need greater precision, you can use this to give you nanoseconds: while true do printf '%s\r' "$(date +%H:%M:%S:%N)" doneįinally, if you really, really want "stopwatch format", where everything starts at 0 and starts growing, you could do something like this: start=$(date +%s)įor a countdown timer (which is not what your original question asked for) you could do this (change seconds accordingly): seconds=20 That will show you the seconds passing in realtime and you can stop it with Ctrl+ C. If all you want is a stopwatch, you can do this: while true do printf '%s\r' "$(date)" done We also have many other calculators.I'm not sure why you need beep. Got your fix of the hours difference calculator? There are many more where that came from. I hope you enjoy the minute duration tool and you find it useful for all your minute math. Instead of casually saying "just five more minutes", you can use the tool to show the relationship between two times. It's also very useful when exploring time with children. The minutes calculator is useful if you are paid in fractions of an hour, for example in 15 or 30 minute increments. This tool along with the hours calculator are useful to compute the length of a shift. If the start time is later than the end time it will do the math assuming the time frame passed midnight. The tool will assume the two times fall within the same 24 hour period. What if the time-span crosses midnight? That is, what if the start time is later than end time? Is Noon in the AM or PM? What About Midnight?īy tradtion, 12:00 PM is noon and 12:00 AM is midnight. Minutes Between: A count of the minutes between the start and end time you entered in the tool.Again, the tool will assume the two hours happened within 24 hours of each other (up to 23 hours and 59 minute). We'll then do the math on the two times you give us and calculate the minutes between them. Next, click Calculate Difference in Minutes. End time: the end of the activity or time-span.Start time: The beginning of the activity or time-span.To use the tool to find the minutes difference between two times, enter 4 Date Calculators Using the Minutes Calculator
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