blacklee

sudo find / -size +200M -ls
sudo find / -size +200M -size -500M -ls

blacklee

cd /path/to/dir && wget -w 30 -i url-list.txt


# run by crond, */5 * * * * bash /path/to/dir/test.sh > /dev/null

cd /path/to/dir
for i in `ls *.zip`; do
  unzip -t $i > /dev/null
  if [[ $? -eq 0 ]]; then
    mv $i download_done/

blacklee

# Files
find . -type f | wc -l

# Directories
find . -type d | wc -l

# Block special
find . -type b | wc -l

# Character special

blacklee

# last modify time of file
stat -f "%m" $file

blacklee

class ApplicationController < ActionController::Base
  before_filter :check_token, :only => [some_actions...]
  def check_token  
    token_file = File.join(Rails.root.to_s, "tmp", "tokens", params[:__token__])
    if File.exists?(token_file)
      require 'fileutils'
      FileUtils.rm(token_file)
      return true  
    end  
    false  

blacklee

UITableViewCell reuse problem.

appearance:
dynamic height cell, with dynamic UILabel...
the cell's height is calculated correctly, but the label shows wrong.
cell display incorrect before reuse, after reused, everything displays well.
in CostomCell's layoutSubviews method, each subview's frame is right if you print them.

reason:
App's using xib to draw custom UITableViewCell.

blacklee

- (void) tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
    // somecode
    [self performSelectorInBackground:@selector(loadMoreData:) withObject:nil];
}

- (void) loadMoreData:(id) s {
    // some code to pull data from remote
    dispatch_async(dispatch_get_main_queue(), ^{
      [self.tableView reloadData];
    });

blacklee

当 layoutSubviews 里设置了 frame 但是界面不刷新时，检查一下 xib 里面是不是勾上了 use Autolayout ，把这个去掉就好

When you have set frame in layoutSubviews but it do not refresh the view, we should uncheck the [use Autolayout] in xib.

blacklee

create:
git tag tagname

push to master:
git push --tags

list tags:
git tag --list
git tag -l

blacklee

#import "MobClickOpenUDID+Swizzled.h"
#import <objc/message.h>
#import <JRSwizzle.h>   // Swizzle 类方法，这样可以避免类去调用某些Apple可能不允许的方法，通过审核
#import "YourDevice.h"  // 你的设备相关类，用于生成自己的Device Unique ID
#import <RegExCategories.h> // 正则表达式
#import <NSString+Ruby.h> // 字符串工具类

static NSString * const kOpenUDIDKey = @"OpenUDID";
static NSString * const kOpenUDIDSlotKey = @"OpenUDID_slot";