'Hilong' web sites
Writing ruby scripts that respect pipelines
jstorimer.com 2012-03-13
hilong . It a small, simple utility that takes a file as an argument and prints each line prepended with its length. Lines longer than the maximum length 80 chars by default are highlighted in red. Here the simplest version of our script. usr bin env ruby A file is passed in as an argument input File.open ARGV 0 escaped bash color codes red e 31m reset color e 0m maximum line length 80 For each line of the input.. input.each line
jstorimer.com 2012-03-13
hilong . It a small, simple utility that takes a file as an argument and prints each line prepended with its length. Lines longer than the maximum length 80 chars by default are highlighted in red. Here the simplest version of our script. usr bin env ruby A file is passed in as an argument input File.open ARGV 0 escaped bash color codes red e 31m reset color e 0m maximum line length 80 For each line of the input.. input.each line
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On colorized output
hilong Gemfile. less hilong Gemfile. grep gem hilong Gemfile. more hilong Gemfile out.put Your results may vary depending on your system and your configuration, but for me the first two experiments worked just fine and the second two didn t. So grep and less handled the color codes fine, but more didn t. Redirecting to a file obviously just preserved the raw text, which won t be interpreted by text editors and the like when it
MORE
ⓘ
On colorized output
hilong Gemfile. less hilong Gemfile. grep gem hilong Gemfile. more hilong Gemfile out.put Your results may vary depending on your system and your configuration, but for me the first two experiments worked just fine and the second two didn t. So grep and less handled the color codes fine, but more didn t. Redirecting to a file obviously just preserved the raw text, which won t be interpreted by text editors and the like when it
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