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@akostadinov
akostadinov / find_follow.rb
Last active Aug 29, 2015
ruby implementation of find that follows symbolic links; depth first order; raises if broken links or cycles are met
View find_follow.rb
=begin
* ruby implementation of find that follows symbolic directory links
* tested on ruby 1.9.3, ruby 2.0 and jruby on Fedora 20 linux
* you can use Find.prune
* detect symlinks to dirs by path "/" suffix; does nothing with files so `symlink?` method is working fine
* depth first order
* detects cycles and raises an error
* raises on broken links
* uses recursion in the `do_find` proc when directory links are met (takes a lot of nested links until SystemStackError, that's practically never)
View cp_r_dereference.rb
=begin
based on find_follow.rb : https://gist.github.com/akostadinov/05c2a976dc16ffee9cac
* use like: cp_r_dereference 'src', 'dst'
Note: if directory `src` content is copied instead of the full dir. i.e. you end up
with `dst/*` instead of `dst/basename(src)/*`
Copyright (c) 2014 Red Hat inc
@akostadinov
akostadinov / cucumber_pry
Last active Aug 29, 2015
hack cucumber to have an entry point to debug abd continue scenario after failure
View cucumber_pry
# execute this code to fall into a pry session upoon step failure
# works only with cucumber 1.3
# so far for 2.0 best similar approach is to us the After hook
# fall into pry/buybug if scenario.failed? is true
# After hook works for 1.3 as well
Cucumber::Ast::StepInvocation.class_eval do
## first make sure we don't lose original accept method
unless self.instance_methods.include?(:orig_accept)
alias_method :orig_accept, :accept
View fb2ical.php
<?php
/*
original code by cogitom: https://gist.github.com/997980/
phibo23: https://gist.github.com/2808256/
This script reads future events (plus several days into the past) from Facebook pages
and creates a subscribable iCalendar
Improvements upon the original version:
- avoid setting DTEND field if facebook event lacks an end time
@akostadinov
akostadinov / arch_comp.rb
Last active Aug 29, 2015
find duplicate files (WIP)
View arch_comp.rb
require 'fileutils'
# this is ugly quickly hacked script, not very nice and reliable at the moment
# it finds what files from one archive need to be backed-up (i.e. are not present in some other archive dir)
# $ find new_dir -type f > arch.txt
# $ find old_dir -type f > arch_old.txt
# `find -name ".?*" -prune -o -type f` to avoid hidden files
# cat to_arch.txt | xargs -d "\n" stat -c "%s" | awk '{size+=$1} END {print size}' # to see size of files to copy
# sudo rsync -avx --files-from=to_arch.txt ./ /path/to/store/backup
# TODO: get files fast hash (md5?) and compare based on it; avoid external tools like find
View get_cert_chain.rb
=begin
Copyright (c) 2015 Red Hat inc
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
@akostadinov
akostadinov / add_child_ns_nokogiri_bug.rb
Last active Jun 9, 2016 — forked from gioele/add_child_ns.rb
Nokogiri `add_child` does not copy namespaces
View add_child_ns_nokogiri_bug.rb
#!/usr/bin/env ruby
# see https://github.com/sparklemotion/nokogiri/issues/1200
require 'nokogiri'
src =<<EOD
<wrapper xmlns="ns">
<record xml:id="r1" xmlns:extra="extra">
<field>aaa</field>
View add_dup_child_ns_nokogiri_bug.rb
#!/usr/bin/env ruby
# see https://github.com/sparklemotion/nokogiri/issues/1200
require 'nokogiri'
src =<<EOD
<wrapper xmlns="ns">
<record xml:id="r1" xmlns:extra="extra">
<field>aaa</field>
@akostadinov
akostadinov / wsse_xml.rb
Last active Jun 13, 2016
generate XML WSSE credentials with the simple `wsse` gem.
View wsse_xml.rb
require 'io/console'
require 'wsse'
header = WSSE::header('username', STDIN.noecho(&:gets).chomp)
def wsse_xml(user, password)
raw = WSSE::header(user, password)
# username = raw.gsub(/^.* Username="(.*)", PasswordDigest=".*(?!PasswordDigest)$/, '\\1')
digest = raw.gsub(/^.*, PasswordDigest="(.*)", Nonce=".*$/, '\\1')
nonce = raw.gsub(/^.*, Nonce="(.*)", Created=".*$/, '\\1')
@akostadinov
akostadinov / stack_trace.sh
Last active Sep 20, 2016
Get stack trace in Bash shell script/program.
View stack_trace.sh
# LICENSE: MIT, wtfpl or whatever OSS license you like
function get_stack () {
STACK=""
local i message="${1:-""}"
local stack_size=${#FUNCNAME[@]}
# to avoid noise we start with 1 to skip the get_stack function
for (( i=1; i<$stack_size; i++ )); do
local func="${FUNCNAME[$i]}"
[ x$func = x ] && func=MAIN
local linen="${BASH_LINENO[$(( i - 1 ))]}"
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