Created
September 6, 2013 06:54
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Simple progress bar script without Gem using Ruby.
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#!/usr/bin/env ruby | |
progress = 'Progress [' | |
1000.times do |i| | |
# i is number from 0-999 | |
j = i + 1 | |
# add 1 percent every 10 times | |
if j % 10 == 0 | |
progress << "=" | |
# move the cursor to the beginning of the line with \r | |
print "\r" | |
# puts add \n to the end of string, use print instead | |
print progress + " #{j / 10} %" | |
# force the output to appear immediately when using print | |
# by default when \n is printed to the standard output, the buffer is flushed. | |
$stdout.flush | |
sleep 0.05 | |
end | |
end | |
puts "\nDone!" |
Year and a half later I just want to say this was very instructive. I was looking to learn about this but either examples were too vague (stackoverflow) or too complex (various gems). Thank you!
For anyone that tries this with a number other than 1000 I think that this might make things a little more clear:
progress = 'Progress ['
iteration_count = 1000
iteration_count.times do |i|
# i is number from 0-999
j = i + 1
# how many times the total number is divisible by 100 (I couldn't come up with a great name off the top of my head)
denominator = iteration_count / 100
# add 1 percent every 10 times
if j % denominator == 0
progress << "="
# move the cursor to the beginning of the line with \r
print "\r"
# puts add \n to the end of string, use print instead
print progress + " #{j / denominator} %]"
# force the output to appear immediately when using print
# by default when \n is printed to the standard output, the buffer is flushed.
$stdout.flush
sleep 0.05
end
end
puts "\nDone!"
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before last lilne :D