mess - Wiki - lord63

许多待整理凌乱的东西暂时先放这里，等攒攒多了有头绪了再整理归类。

Leetcode

wireshark

$ sudo dpkg-reconfigure wireshark-common
选择 Yes
然后将自己的用户加入 wireshark 组

gimp

celery

RabbitMQ

RabbitMQ 使用参考
RabbitMQ简介
[[翻译] [RabbitMQ+Python入门经典] 兔子和兔子窝](http://blog.ftofficer.com/2010/03/translation-rabbitmq-python-rabbits-and-warrens/)
rabbitmq

monit

official site

ip location

regular expression

comments should be sentence

Start with a capital, have a subject and a verb, use a complete sentence, end
with a period.

The reasons:

Capitals means a start, and a period is a indication of the end.
Focus on what you are writing. Explaining yourself to others is a good way to
understand what you are doing.
Easier to extend them later. The second sentence could be added more natually,
and he don't have to modify the old sentence.
The breken windows theory. If you take care of small things, other are more
likely to take care of the bigger things.

Text to ascii art

Linux 使用投影仪

我的使用场景为：Linux Mint 16，Nvidia GTX570m 显卡，已经安装闭源驱动。

首先接上投影仪
nvidia-settting 然后自己点鼠标操作 Xserver Displayer Configuration 操作
选择 clone 和相应分辨率（具体有点忘记，下次看看去）

这样基本就能用了，但是由于我的是 1080P 的屏幕，投影仪的最高分辨率为 1366*768，
所以只能显示自己笔记本屏幕上的一部分，但是勉强能用了 =。=

Mouse

$ xset m 1 5

Ipython + matplotlib

MC

Video streaming

Free ssl certificate(startssl)

Vim 4913

The reason:

/*
 * Check if we can create a file and set the owner/group to
 * the ones from the original file.
 * First find a file name that doesn't exist yet (use some
 * arbitrary numbers).
 */
STRCPY(IObuff, fname);
for (i = 4913; ; i += 123)
{
    sprintf((char *)gettail(IObuff), "%d", i);
    if (mch_lstat((char *)IObuff, &st) < 0)
        break;
}

Reference:

Presentation

开启 crontab 的日志

$ sudo vim /etc/rsyslog.d/50-default.conf

去掉注释符 # （第十行大概）

#cron.*              /var/log/cron.log

重启 rsyslog

$ sudo /etc/init.d/rsyslog restart

ssh 遇到 permission denied (publickey)

查看账户 home 目录下的 .ssh 目录的权限 755，所有者和所属组是否是自己。

scp(secure copy)

get file from server:

$ scp -P port root@server_ip:/remote/path/file  /local/path/file

get dir from server:

$ scp -P port -r root@server_ip:/remote/dir/ /local/dir/

send file to server:

scp -P port /local/path/file root@server_ip:/remote/path/file

send dir to server:

scp -P port -r /local/dir/ root@server_ip:/remote/dir/

Add swap on LinuxMint 16(build YCM need swap)

crete a 2G(example) file by typing:

$ sudo fallocate -l 2G /swapfile

verify:

$ ls -lh /swapfile
-rw-r--r-- 1 root root 2.0G Jul 24 17:19 /swapfile

enabling the swap file

lock down the permissions by typing:

$ sudo chmod 600 /swapfile

set up the swap space:

$ sudo mkswap /swapfile
Setting up swapspace version 1, size = xxxxx KiB
no label, UUID=xxxxxx

enable it:

$ sudo swapon /swapfile

check:

$ sudo swapon -s
 Filename                Type        Size    Used    Priority
/swapfile               file        xxxxxx    0       -1

Reference